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Finding the Fourth Proportional to 185,807.20, 278,710.80 and 156,938.80

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Solution

The fourth proportional to 185,807.20, 278,710.80 and 156,938.80 is: 235,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,807.20 : 278,710.80 = 156,938.80 : x
  2. Step 2: Convert to fraction form
    185,807.20/278,710.80 = 156,938.80/x
  3. Step 3: Cross multiply
    185,807.20x = 278,710.80 × 156,938.80
  4. Step 4: Simplify right side
    185,807.20x = 43,740,538,499.04
  5. Step 5: Solve for x
    x = 43,740,538,499.04/185,807.20
  6. Step 6: Final answer
    x = 235,408.20

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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.