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Finding the Fourth Proportional to 620,760.20, 931,140.29 and 177,528.20

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Solution

The fourth proportional to 620,760.20, 931,140.29 and 177,528.20 is: 266,292.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,760.20 : 931,140.29 = 177,528.20 : x
  2. Step 2: Convert to fraction form
    620,760.20/931,140.29 = 177,528.20/x
  3. Step 3: Cross multiply
    620,760.20x = 931,140.29 × 177,528.20
  4. Step 4: Simplify right side
    620,760.20x = 165,303,654,087.84
  5. Step 5: Solve for x
    x = 165,303,654,087.84/620,760.20
  6. Step 6: Final answer
    x = 266,292.29

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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.