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Finding the Fourth Proportional to 98,248.39, 147,249.32 and 42,022.51

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Solution

The fourth proportional to 98,248.39, 147,249.32 and 42,022.51 is: 62,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,248.39 : 147,249.32 = 42,022.51 : x
  2. Step 2: Convert to fraction form
    98,248.39/147,249.32 = 42,022.51/x
  3. Step 3: Cross multiply
    98,248.39x = 147,249.32 × 42,022.51
  4. Step 4: Simplify right side
    98,248.39x = 6,187,786,022.19
  5. Step 5: Solve for x
    x = 6,187,786,022.19/98,248.39
  6. Step 6: Final answer
    x = 62,981.04

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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.