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Finding the Fourth Proportional to 60,505.62, 90,758.88 and 21,062.64

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Solution

The fourth proportional to 60,505.62, 90,758.88 and 21,062.64 is: 31,594.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,505.62 : 90,758.88 = 21,062.64 : x
  2. Step 2: Convert to fraction form
    60,505.62/90,758.88 = 21,062.64/x
  3. Step 3: Cross multiply
    60,505.62x = 90,758.88 × 21,062.64
  4. Step 4: Simplify right side
    60,505.62x = 1,911,621,616.24
  5. Step 5: Solve for x
    x = 1,911,621,616.24/60,505.62
  6. Step 6: Final answer
    x = 31,594.12

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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.