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Finding the Fourth Proportional to 124,162.64, 171,341.16 and 67,572.80

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Solution

The fourth proportional to 124,162.64, 171,341.16 and 67,572.80 is: 93,248.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,162.64 : 171,341.16 = 67,572.80 : x
  2. Step 2: Convert to fraction form
    124,162.64/171,341.16 = 67,572.80/x
  3. Step 3: Cross multiply
    124,162.64x = 171,341.16 × 67,572.80
  4. Step 4: Simplify right side
    124,162.64x = 11,578,001,936.45
  5. Step 5: Solve for x
    x = 11,578,001,936.45/124,162.64
  6. Step 6: Final answer
    x = 93,248.68

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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.