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Finding the Fourth Proportional to 865,872.80, 1,194,130.80 and 543,612.92

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Solution

The fourth proportional to 865,872.80, 1,194,130.80 and 543,612.92 is: 749,700.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,872.80 : 1,194,130.80 = 543,612.92 : x
  2. Step 2: Convert to fraction form
    865,872.80/1,194,130.80 = 543,612.92/x
  3. Step 3: Cross multiply
    865,872.80x = 1,194,130.80 × 543,612.92
  4. Step 4: Simplify right side
    865,872.80x = 649,144,931,049.94
  5. Step 5: Solve for x
    x = 649,144,931,049.94/865,872.80
  6. Step 6: Final answer
    x = 749,700.11

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Half scale
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Double scale
Find fourth proportional to 865,873.80, 1,194,132.18 and 543,613.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.