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Finding the Fourth Proportional to 576,141.20, 864,211.80 and 155,459.60

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Solution

The fourth proportional to 576,141.20, 864,211.80 and 155,459.60 is: 233,189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,141.20 : 864,211.80 = 155,459.60 : x
  2. Step 2: Convert to fraction form
    576,141.20/864,211.80 = 155,459.60/x
  3. Step 3: Cross multiply
    576,141.20x = 864,211.80 × 155,459.60
  4. Step 4: Simplify right side
    576,141.20x = 134,350,020,743.28
  5. Step 5: Solve for x
    x = 134,350,020,743.28/576,141.20
  6. Step 6: Final answer
    x = 233,189.40

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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.