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Finding the Fourth Proportional to 60,488.64, 90,744.84 and 21,047.04

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Solution

The fourth proportional to 60,488.64, 90,744.84 and 21,047.04 is: 31,574.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,488.64 : 90,744.84 = 21,047.04 : x
  2. Step 2: Convert to fraction form
    60,488.64/90,744.84 = 21,047.04/x
  3. Step 3: Cross multiply
    60,488.64x = 90,744.84 × 21,047.04
  4. Step 4: Simplify right side
    60,488.64x = 1,909,910,277.27
  5. Step 5: Solve for x
    x = 1,909,910,277.27/60,488.64
  6. Step 6: Final answer
    x = 31,574.69

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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.