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Finding the Fourth Proportional to 124,753.70, 172,159.94 and 71,038.71

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Solution

The fourth proportional to 124,753.70, 172,159.94 and 71,038.71 is: 98,033.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,753.70 : 172,159.94 = 71,038.71 : x
  2. Step 2: Convert to fraction form
    124,753.70/172,159.94 = 71,038.71/x
  3. Step 3: Cross multiply
    124,753.70x = 172,159.94 × 71,038.71
  4. Step 4: Simplify right side
    124,753.70x = 12,230,020,558.00
  5. Step 5: Solve for x
    x = 12,230,020,558.00/124,753.70
  6. Step 6: Final answer
    x = 98,033.33

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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.