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Finding the Fourth Proportional to 191,716.70, 287,575.05 and 180,830.30

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Solution

The fourth proportional to 191,716.70, 287,575.05 and 180,830.30 is: 271,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,716.70 : 287,575.05 = 180,830.30 : x
  2. Step 2: Convert to fraction form
    191,716.70/287,575.05 = 180,830.30/x
  3. Step 3: Cross multiply
    191,716.70x = 287,575.05 × 180,830.30
  4. Step 4: Simplify right side
    191,716.70x = 52,002,282,564.02
  5. Step 5: Solve for x
    x = 52,002,282,564.02/191,716.70
  6. Step 6: Final answer
    x = 271,245.45

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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.