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Finding the Fourth Proportional to 865,810.80, 1,194,045.30 and 543,550.86

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Solution

The fourth proportional to 865,810.80, 1,194,045.30 and 543,550.86 is: 749,614.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,810.80 : 1,194,045.30 = 543,550.86 : x
  2. Step 2: Convert to fraction form
    865,810.80/1,194,045.30 = 543,550.86/x
  3. Step 3: Cross multiply
    865,810.80x = 1,194,045.30 × 543,550.86
  4. Step 4: Simplify right side
    865,810.80x = 649,024,349,693.96
  5. Step 5: Solve for x
    x = 649,024,349,693.96/865,810.80
  6. Step 6: Final answer
    x = 749,614.52

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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.