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Finding the Fourth Proportional to 118,475.40, 177,713.10 and 74,152.20

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Solution

The fourth proportional to 118,475.40, 177,713.10 and 74,152.20 is: 111,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,475.40 : 177,713.10 = 74,152.20 : x
  2. Step 2: Convert to fraction form
    118,475.40/177,713.10 = 74,152.20/x
  3. Step 3: Cross multiply
    118,475.40x = 177,713.10 × 74,152.20
  4. Step 4: Simplify right side
    118,475.40x = 13,177,817,333.82
  5. Step 5: Solve for x
    x = 13,177,817,333.82/118,475.40
  6. Step 6: Final answer
    x = 111,228.30

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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.