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Finding the Fourth Proportional to 124,312.66, 171,551.45 and 67,724.03

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Solution

The fourth proportional to 124,312.66, 171,551.45 and 67,724.03 is: 93,459.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,312.66 : 171,551.45 = 67,724.03 : x
  2. Step 2: Convert to fraction form
    124,312.66/171,551.45 = 67,724.03/x
  3. Step 3: Cross multiply
    124,312.66x = 171,551.45 × 67,724.03
  4. Step 4: Simplify right side
    124,312.66x = 11,618,156,144.53
  5. Step 5: Solve for x
    x = 11,618,156,144.53/124,312.66
  6. Step 6: Final answer
    x = 93,459.16

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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.