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Finding the Fourth Proportional to 124,461.64, 171,753.78 and 67,874.12

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Solution

The fourth proportional to 124,461.64, 171,753.78 and 67,874.12 is: 93,664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,461.64 : 171,753.78 = 67,874.12 : x
  2. Step 2: Convert to fraction form
    124,461.64/171,753.78 = 67,874.12/x
  3. Step 3: Cross multiply
    124,461.64x = 171,753.78 × 67,874.12
  4. Step 4: Simplify right side
    124,461.64x = 11,657,636,674.17
  5. Step 5: Solve for x
    x = 11,657,636,674.17/124,461.64
  6. Step 6: Final answer
    x = 93,664.50

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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.