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Finding the Fourth Proportional to 354,172.80, 531,310.40 and 117,526.40

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Solution

The fourth proportional to 354,172.80, 531,310.40 and 117,526.40 is: 176,306.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,172.80 : 531,310.40 = 117,526.40 : x
  2. Step 2: Convert to fraction form
    354,172.80/531,310.40 = 117,526.40/x
  3. Step 3: Cross multiply
    354,172.80x = 531,310.40 × 117,526.40
  4. Step 4: Simplify right side
    354,172.80x = 62,442,998,594.56
  5. Step 5: Solve for x
    x = 62,442,998,594.56/354,172.80
  6. Step 6: Final answer
    x = 176,306.59

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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.