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Finding the Fourth Proportional to 61,836.47, 92,678.70 and 28,510.28

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Solution

The fourth proportional to 61,836.47, 92,678.70 and 28,510.28 is: 42,730.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,836.47 : 92,678.70 = 28,510.28 : x
  2. Step 2: Convert to fraction form
    61,836.47/92,678.70 = 28,510.28/x
  3. Step 3: Cross multiply
    61,836.47x = 92,678.70 × 28,510.28
  4. Step 4: Simplify right side
    61,836.47x = 2,642,295,687.04
  5. Step 5: Solve for x
    x = 2,642,295,687.04/61,836.47
  6. Step 6: Final answer
    x = 42,730.38

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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.