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Finding the Fourth Proportional to 61,722.84, 92,509.83 and 28,397.28

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Solution

The fourth proportional to 61,722.84, 92,509.83 and 28,397.28 is: 42,561.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,722.84 : 92,509.83 = 28,397.28 : x
  2. Step 2: Convert to fraction form
    61,722.84/92,509.83 = 28,397.28/x
  3. Step 3: Cross multiply
    61,722.84x = 92,509.83 × 28,397.28
  4. Step 4: Simplify right side
    61,722.84x = 2,627,027,545.26
  5. Step 5: Solve for x
    x = 2,627,027,545.26/61,722.84
  6. Step 6: Final answer
    x = 42,561.68

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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.