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Finding the Fourth Proportional to 60,732.40, 91,271.40 and 53,129.20

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Solution

The fourth proportional to 60,732.40, 91,271.40 and 53,129.20 is: 79,844.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,732.40 : 91,271.40 = 53,129.20 : x
  2. Step 2: Convert to fraction form
    60,732.40/91,271.40 = 53,129.20/x
  3. Step 3: Cross multiply
    60,732.40x = 91,271.40 × 53,129.20
  4. Step 4: Simplify right side
    60,732.40x = 4,849,176,464.88
  5. Step 5: Solve for x
    x = 4,849,176,464.88/60,732.40
  6. Step 6: Final answer
    x = 79,844.97

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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.