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Finding the Fourth Proportional to 619,240.80, 928,861.20 and 367,298.40

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Solution

The fourth proportional to 619,240.80, 928,861.20 and 367,298.40 is: 550,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,240.80 : 928,861.20 = 367,298.40 : x
  2. Step 2: Convert to fraction form
    619,240.80/928,861.20 = 367,298.40/x
  3. Step 3: Cross multiply
    619,240.80x = 928,861.20 × 367,298.40
  4. Step 4: Simplify right side
    619,240.80x = 341,169,232,582.08
  5. Step 5: Solve for x
    x = 341,169,232,582.08/619,240.80
  6. Step 6: Final answer
    x = 550,947.60

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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.