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Finding the Fourth Proportional to 104,587.40, 156,621.90 and 83,851.40

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Solution

The fourth proportional to 104,587.40, 156,621.90 and 83,851.40 is: 125,569.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,587.40 : 156,621.90 = 83,851.40 : x
  2. Step 2: Convert to fraction form
    104,587.40/156,621.90 = 83,851.40/x
  3. Step 3: Cross multiply
    104,587.40x = 156,621.90 × 83,851.40
  4. Step 4: Simplify right side
    104,587.40x = 13,132,965,585.66
  5. Step 5: Solve for x
    x = 13,132,965,585.66/104,587.40
  6. Step 6: Final answer
    x = 125,569.29

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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.