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Finding the Fourth Proportional to 118,221.65, 177,412.79 and 48,113.72

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Solution

The fourth proportional to 118,221.65, 177,412.79 and 48,113.72 is: 72,203.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,221.65 : 177,412.79 = 48,113.72 : x
  2. Step 2: Convert to fraction form
    118,221.65/177,412.79 = 48,113.72/x
  3. Step 3: Cross multiply
    118,221.65x = 177,412.79 × 48,113.72
  4. Step 4: Simplify right side
    118,221.65x = 8,535,988,535.70
  5. Step 5: Solve for x
    x = 8,535,988,535.70/118,221.65
  6. Step 6: Final answer
    x = 72,203.26

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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.