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Finding the Fourth Proportional to 61,686.66, 92,543.94 and 19,569.30

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Solution

The fourth proportional to 61,686.66, 92,543.94 and 19,569.30 is: 29,358.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,686.66 : 92,543.94 = 19,569.30 : x
  2. Step 2: Convert to fraction form
    61,686.66/92,543.94 = 19,569.30/x
  3. Step 3: Cross multiply
    61,686.66x = 92,543.94 × 19,569.30
  4. Step 4: Simplify right side
    61,686.66x = 1,811,020,125.04
  5. Step 5: Solve for x
    x = 1,811,020,125.04/61,686.66
  6. Step 6: Final answer
    x = 29,358.38

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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.