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Finding the Fourth Proportional to 191,575.40, 287,363.10 and 66,900.20

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Solution

The fourth proportional to 191,575.40, 287,363.10 and 66,900.20 is: 100,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,575.40 : 287,363.10 = 66,900.20 : x
  2. Step 2: Convert to fraction form
    191,575.40/287,363.10 = 66,900.20/x
  3. Step 3: Cross multiply
    191,575.40x = 287,363.10 × 66,900.20
  4. Step 4: Simplify right side
    191,575.40x = 19,224,648,862.62
  5. Step 5: Solve for x
    x = 19,224,648,862.62/191,575.40
  6. Step 6: Final answer
    x = 100,350.30

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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.