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Finding the Fourth Proportional to 239,159.20, 358,047.60 and 145,847.20

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Solution

The fourth proportional to 239,159.20, 358,047.60 and 145,847.20 is: 218,349.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,159.20 : 358,047.60 = 145,847.20 : x
  2. Step 2: Convert to fraction form
    239,159.20/358,047.60 = 145,847.20/x
  3. Step 3: Cross multiply
    239,159.20x = 358,047.60 × 145,847.20
  4. Step 4: Simplify right side
    239,159.20x = 52,220,239,926.72
  5. Step 5: Solve for x
    x = 52,220,239,926.72/239,159.20
  6. Step 6: Final answer
    x = 218,349.28

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1.5x scale

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.