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Finding the Fourth Proportional to 98,479.55, 147,756.54 and 38,550.85

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Solution

The fourth proportional to 98,479.55, 147,756.54 and 38,550.85 is: 57,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,479.55 : 147,756.54 = 38,550.85 : x
  2. Step 2: Convert to fraction form
    98,479.55/147,756.54 = 38,550.85/x
  3. Step 3: Cross multiply
    98,479.55x = 147,756.54 × 38,550.85
  4. Step 4: Simplify right side
    98,479.55x = 5,696,139,471.28
  5. Step 5: Solve for x
    x = 5,696,139,471.28/98,479.55
  6. Step 6: Final answer
    x = 57,840.84

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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.