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Finding the Fourth Proportional to 96,689.90, 145,042.16 and 62,878.88

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Solution

The fourth proportional to 96,689.90, 145,042.16 and 62,878.88 is: 94,323.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,689.90 : 145,042.16 = 62,878.88 : x
  2. Step 2: Convert to fraction form
    96,689.90/145,042.16 = 62,878.88/x
  3. Step 3: Cross multiply
    96,689.90x = 145,042.16 × 62,878.88
  4. Step 4: Simplify right side
    96,689.90x = 9,120,088,621.79
  5. Step 5: Solve for x
    x = 9,120,088,621.79/96,689.90
  6. Step 6: Final answer
    x = 94,323.07

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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.