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Finding the Fourth Proportional to 932,967.15, 1,287,891.90 and 627,220.86

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Solution

The fourth proportional to 932,967.15, 1,287,891.90 and 627,220.86 is: 865,831.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    932,967.15 : 1,287,891.90 = 627,220.86 : x
  2. Step 2: Convert to fraction form
    932,967.15/1,287,891.90 = 627,220.86/x
  3. Step 3: Cross multiply
    932,967.15x = 1,287,891.90 × 627,220.86
  4. Step 4: Simplify right side
    932,967.15x = 807,792,665,105.03
  5. Step 5: Solve for x
    x = 807,792,665,105.03/932,967.15
  6. Step 6: Final answer
    x = 865,831.84

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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.