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Finding the Fourth Proportional to 582,140.30, 873,210.45 and 512,156.30

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Solution

The fourth proportional to 582,140.30, 873,210.45 and 512,156.30 is: 768,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,140.30 : 873,210.45 = 512,156.30 : x
  2. Step 2: Convert to fraction form
    582,140.30/873,210.45 = 512,156.30/x
  3. Step 3: Cross multiply
    582,140.30x = 873,210.45 × 512,156.30
  4. Step 4: Simplify right side
    582,140.30x = 447,220,233,193.34
  5. Step 5: Solve for x
    x = 447,220,233,193.34/582,140.30
  6. Step 6: Final answer
    x = 768,234.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.