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Finding the Fourth Proportional to 619,954.60, 929,931.90 and 170,744.80

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Solution

The fourth proportional to 619,954.60, 929,931.90 and 170,744.80 is: 256,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,954.60 : 929,931.90 = 170,744.80 : x
  2. Step 2: Convert to fraction form
    619,954.60/929,931.90 = 170,744.80/x
  3. Step 3: Cross multiply
    619,954.60x = 929,931.90 × 170,744.80
  4. Step 4: Simplify right side
    619,954.60x = 158,781,036,279.12
  5. Step 5: Solve for x
    x = 158,781,036,279.12/619,954.60
  6. Step 6: Final answer
    x = 256,117.20

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Double scale
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Similar ratio
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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.