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Finding the Fourth Proportional to 358,748.48, 538,153.68 and 92,506.76

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Solution

The fourth proportional to 358,748.48, 538,153.68 and 92,506.76 is: 138,768.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,748.48 : 538,153.68 = 92,506.76 : x
  2. Step 2: Convert to fraction form
    358,748.48/538,153.68 = 92,506.76/x
  3. Step 3: Cross multiply
    358,748.48x = 538,153.68 × 92,506.76
  4. Step 4: Simplify right side
    358,748.48x = 49,782,853,318.88
  5. Step 5: Solve for x
    x = 49,782,853,318.88/358,748.48
  6. Step 6: Final answer
    x = 138,768.12

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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.