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Finding the Fourth Proportional to 865,889.80, 1,194,154.14 and 543,630.04

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Solution

The fourth proportional to 865,889.80, 1,194,154.14 and 543,630.04 is: 749,723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,889.80 : 1,194,154.14 = 543,630.04 : x
  2. Step 2: Convert to fraction form
    865,889.80/1,194,154.14 = 543,630.04/x
  3. Step 3: Cross multiply
    865,889.80x = 1,194,154.14 × 543,630.04
  4. Step 4: Simplify right side
    865,889.80x = 649,178,062,894.37
  5. Step 5: Solve for x
    x = 649,178,062,894.37/865,889.80
  6. Step 6: Final answer
    x = 749,723.65

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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.