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Finding the Fourth Proportional to 92,641.64, 138,960.54 and 22,521.32

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Solution

The fourth proportional to 92,641.64, 138,960.54 and 22,521.32 is: 33,781.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,641.64 : 138,960.54 = 22,521.32 : x
  2. Step 2: Convert to fraction form
    92,641.64/138,960.54 = 22,521.32/x
  3. Step 3: Cross multiply
    92,641.64x = 138,960.54 × 22,521.32
  4. Step 4: Simplify right side
    92,641.64x = 3,129,574,788.71
  5. Step 5: Solve for x
    x = 3,129,574,788.71/92,641.64
  6. Step 6: Final answer
    x = 33,781.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.