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Finding the Fourth Proportional to 74,598.98, 102,948.21 and 42,335.69

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Solution

The fourth proportional to 74,598.98, 102,948.21 and 42,335.69 is: 58,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,598.98 : 102,948.21 = 42,335.69 : x
  2. Step 2: Convert to fraction form
    74,598.98/102,948.21 = 42,335.69/x
  3. Step 3: Cross multiply
    74,598.98x = 102,948.21 × 42,335.69
  4. Step 4: Simplify right side
    74,598.98x = 4,358,382,989.87
  5. Step 5: Solve for x
    x = 4,358,382,989.87/74,598.98
  6. Step 6: Final answer
    x = 58,424.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.