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Finding the Fourth Proportional to 177,905.70, 245,518.29 and 105,311.70

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Solution

The fourth proportional to 177,905.70, 245,518.29 and 105,311.70 is: 145,335.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,905.70 : 245,518.29 = 105,311.70 : x
  2. Step 2: Convert to fraction form
    177,905.70/245,518.29 = 105,311.70/x
  3. Step 3: Cross multiply
    177,905.70x = 245,518.29 × 105,311.70
  4. Step 4: Simplify right side
    177,905.70x = 25,855,948,500.99
  5. Step 5: Solve for x
    x = 25,855,948,500.99/177,905.70
  6. Step 6: Final answer
    x = 145,335.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.