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Finding the Fourth Proportional to 358,001.20, 538,168.20 and 253,543.60

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Solution

The fourth proportional to 358,001.20, 538,168.20 and 253,543.60 is: 381,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,001.20 : 538,168.20 = 253,543.60 : x
  2. Step 2: Convert to fraction form
    358,001.20/538,168.20 = 253,543.60/x
  3. Step 3: Cross multiply
    358,001.20x = 538,168.20 × 253,543.60
  4. Step 4: Simplify right side
    358,001.20x = 136,449,102,833.52
  5. Step 5: Solve for x
    x = 136,449,102,833.52/358,001.20
  6. Step 6: Final answer
    x = 381,141.47

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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.