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Finding the Fourth Proportional to 61,911.16, 92,882.46 and 28,655.20

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Solution

The fourth proportional to 61,911.16, 92,882.46 and 28,655.20 is: 42,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,911.16 : 92,882.46 = 28,655.20 : x
  2. Step 2: Convert to fraction form
    61,911.16/92,882.46 = 28,655.20/x
  3. Step 3: Cross multiply
    61,911.16x = 92,882.46 × 28,655.20
  4. Step 4: Simplify right side
    61,911.16x = 2,661,565,467.79
  5. Step 5: Solve for x
    x = 2,661,565,467.79/61,911.16
  6. Step 6: Final answer
    x = 42,990.08

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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.