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Finding the Fourth Proportional to 124,137.50, 171,308.31 and 67,547.90

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Solution

The fourth proportional to 124,137.50, 171,308.31 and 67,547.90 is: 93,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,137.50 : 171,308.31 = 67,547.90 : x
  2. Step 2: Convert to fraction form
    124,137.50/171,308.31 = 67,547.90/x
  3. Step 3: Cross multiply
    124,137.50x = 171,308.31 × 67,547.90
  4. Step 4: Simplify right side
    124,137.50x = 11,571,516,593.05
  5. Step 5: Solve for x
    x = 11,571,516,593.05/124,137.50
  6. Step 6: Final answer
    x = 93,215.32

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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.