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Finding the Fourth Proportional to 615,868.80, 923,803.20 and 587,000.40

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Solution

The fourth proportional to 615,868.80, 923,803.20 and 587,000.40 is: 880,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,868.80 : 923,803.20 = 587,000.40 : x
  2. Step 2: Convert to fraction form
    615,868.80/923,803.20 = 587,000.40/x
  3. Step 3: Cross multiply
    615,868.80x = 923,803.20 × 587,000.40
  4. Step 4: Simplify right side
    615,868.80x = 542,272,847,921.28
  5. Step 5: Solve for x
    x = 542,272,847,921.28/615,868.80
  6. Step 6: Final answer
    x = 880,500.60

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Half scale
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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.