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Finding the Fourth Proportional to 452,921.32, 679,384.87 and 133,071.86

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Solution

The fourth proportional to 452,921.32, 679,384.87 and 133,071.86 is: 199,608.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,921.32 : 679,384.87 = 133,071.86 : x
  2. Step 2: Convert to fraction form
    452,921.32/679,384.87 = 133,071.86/x
  3. Step 3: Cross multiply
    452,921.32x = 679,384.87 × 133,071.86
  4. Step 4: Simplify right side
    452,921.32x = 90,407,009,672.54
  5. Step 5: Solve for x
    x = 90,407,009,672.54/452,921.32
  6. Step 6: Final answer
    x = 199,608.64

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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.