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Finding the Fourth Proportional to 630,146.10, 945,219.15 and 621,851.70

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Solution

The fourth proportional to 630,146.10, 945,219.15 and 621,851.70 is: 932,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,146.10 : 945,219.15 = 621,851.70 : x
  2. Step 2: Convert to fraction form
    630,146.10/945,219.15 = 621,851.70/x
  3. Step 3: Cross multiply
    630,146.10x = 945,219.15 × 621,851.70
  4. Step 4: Simplify right side
    630,146.10x = 587,786,135,300.06
  5. Step 5: Solve for x
    x = 587,786,135,300.06/630,146.10
  6. Step 6: Final answer
    x = 932,777.55

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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.