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Finding the Fourth Proportional to 60,780.62, 91,202.52 and 45,985.16

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Solution

The fourth proportional to 60,780.62, 91,202.52 and 45,985.16 is: 69,001.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,780.62 : 91,202.52 = 45,985.16 : x
  2. Step 2: Convert to fraction form
    60,780.62/91,202.52 = 45,985.16/x
  3. Step 3: Cross multiply
    60,780.62x = 91,202.52 × 45,985.16
  4. Step 4: Simplify right side
    60,780.62x = 4,193,962,474.60
  5. Step 5: Solve for x
    x = 4,193,962,474.60/60,780.62
  6. Step 6: Final answer
    x = 69,001.64

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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.