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Finding the Fourth Proportional to 124,319.90, 171,559.86 and 67,731.32

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Solution

The fourth proportional to 124,319.90, 171,559.86 and 67,731.32 is: 93,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,319.90 : 171,559.86 = 67,731.32 : x
  2. Step 2: Convert to fraction form
    124,319.90/171,559.86 = 67,731.32/x
  3. Step 3: Cross multiply
    124,319.90x = 171,559.86 × 67,731.32
  4. Step 4: Simplify right side
    124,319.90x = 11,619,975,776.82
  5. Step 5: Solve for x
    x = 11,619,975,776.82/124,319.90
  6. Step 6: Final answer
    x = 93,468.35

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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.