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Finding the Fourth Proportional to 297,716.60, 446,531.70 and 87,332.60

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Solution

The fourth proportional to 297,716.60, 446,531.70 and 87,332.60 is: 130,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,716.60 : 446,531.70 = 87,332.60 : x
  2. Step 2: Convert to fraction form
    297,716.60/446,531.70 = 87,332.60/x
  3. Step 3: Cross multiply
    297,716.60x = 446,531.70 × 87,332.60
  4. Step 4: Simplify right side
    297,716.60x = 38,996,774,343.42
  5. Step 5: Solve for x
    x = 38,996,774,343.42/297,716.60
  6. Step 6: Final answer
    x = 130,986.23

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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.