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Finding the Fourth Proportional to 355,425.80, 532,361.10 and 316,027.40

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Solution

The fourth proportional to 355,425.80, 532,361.10 and 316,027.40 is: 473,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,425.80 : 532,361.10 = 316,027.40 : x
  2. Step 2: Convert to fraction form
    355,425.80/532,361.10 = 316,027.40/x
  3. Step 3: Cross multiply
    355,425.80x = 532,361.10 × 316,027.40
  4. Step 4: Simplify right side
    355,425.80x = 168,240,694,294.14
  5. Step 5: Solve for x
    x = 168,240,694,294.14/355,425.80
  6. Step 6: Final answer
    x = 473,349.70

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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.