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Finding the Fourth Proportional to 98,748.86, 148,123.28 and 54,352.76

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Solution

The fourth proportional to 98,748.86, 148,123.28 and 54,352.76 is: 81,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,748.86 : 148,123.28 = 54,352.76 : x
  2. Step 2: Convert to fraction form
    98,748.86/148,123.28 = 54,352.76/x
  3. Step 3: Cross multiply
    98,748.86x = 148,123.28 × 54,352.76
  4. Step 4: Simplify right side
    98,748.86x = 8,050,908,483.52
  5. Step 5: Solve for x
    x = 8,050,908,483.52/98,748.86
  6. Step 6: Final answer
    x = 81,529.13

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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.