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Finding the Fourth Proportional to 92,506.40, 138,718.56 and 42,574.40

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Solution

The fourth proportional to 92,506.40, 138,718.56 and 42,574.40 is: 63,842.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,506.40 : 138,718.56 = 42,574.40 : x
  2. Step 2: Convert to fraction form
    92,506.40/138,718.56 = 42,574.40/x
  3. Step 3: Cross multiply
    92,506.40x = 138,718.56 × 42,574.40
  4. Step 4: Simplify right side
    92,506.40x = 5,905,859,460.86
  5. Step 5: Solve for x
    x = 5,905,859,460.86/92,506.40
  6. Step 6: Final answer
    x = 63,842.71

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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.