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Finding the Fourth Proportional to 367,639.60, 551,459.40 and 157,298.80

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Solution

The fourth proportional to 367,639.60, 551,459.40 and 157,298.80 is: 235,948.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,639.60 : 551,459.40 = 157,298.80 : x
  2. Step 2: Convert to fraction form
    367,639.60/551,459.40 = 157,298.80/x
  3. Step 3: Cross multiply
    367,639.60x = 551,459.40 × 157,298.80
  4. Step 4: Simplify right side
    367,639.60x = 86,743,901,868.72
  5. Step 5: Solve for x
    x = 86,743,901,868.72/367,639.60
  6. Step 6: Final answer
    x = 235,948.20

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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.