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Finding the Fourth Proportional to 319,672.30, 441,145.60 and 176,432.34

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Solution

The fourth proportional to 319,672.30, 441,145.60 and 176,432.34 is: 243,475.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,672.30 : 441,145.60 = 176,432.34 : x
  2. Step 2: Convert to fraction form
    319,672.30/441,145.60 = 176,432.34/x
  3. Step 3: Cross multiply
    319,672.30x = 441,145.60 × 176,432.34
  4. Step 4: Simplify right side
    319,672.30x = 77,832,350,488.70
  5. Step 5: Solve for x
    x = 77,832,350,488.70/319,672.30
  6. Step 6: Final answer
    x = 243,475.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.