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Finding the Fourth Proportional to 103,416.90, 155,125.35 and 36,932.10

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Solution

The fourth proportional to 103,416.90, 155,125.35 and 36,932.10 is: 55,398.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,416.90 : 155,125.35 = 36,932.10 : x
  2. Step 2: Convert to fraction form
    103,416.90/155,125.35 = 36,932.10/x
  3. Step 3: Cross multiply
    103,416.90x = 155,125.35 × 36,932.10
  4. Step 4: Simplify right side
    103,416.90x = 5,729,104,938.74
  5. Step 5: Solve for x
    x = 5,729,104,938.74/103,416.90
  6. Step 6: Final answer
    x = 55,398.15

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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.