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Finding the Fourth Proportional to 191,440.80, 287,193.60 and 102,670.20

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Solution

The fourth proportional to 191,440.80, 287,193.60 and 102,670.20 is: 154,022.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,440.80 : 287,193.60 = 102,670.20 : x
  2. Step 2: Convert to fraction form
    191,440.80/287,193.60 = 102,670.20/x
  3. Step 3: Cross multiply
    191,440.80x = 287,193.60 × 102,670.20
  4. Step 4: Simplify right side
    191,440.80x = 29,486,224,350.72
  5. Step 5: Solve for x
    x = 29,486,224,350.72/191,440.80
  6. Step 6: Final answer
    x = 154,022.68

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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.