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Finding the Fourth Proportional to 630,544.40, 945,816.60 and 578,934.80

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Solution

The fourth proportional to 630,544.40, 945,816.60 and 578,934.80 is: 868,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,544.40 : 945,816.60 = 578,934.80 : x
  2. Step 2: Convert to fraction form
    630,544.40/945,816.60 = 578,934.80/x
  3. Step 3: Cross multiply
    630,544.40x = 945,816.60 × 578,934.80
  4. Step 4: Simplify right side
    630,544.40x = 547,566,144,157.68
  5. Step 5: Solve for x
    x = 547,566,144,157.68/630,544.40
  6. Step 6: Final answer
    x = 868,402.20

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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.