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Finding the Fourth Proportional to 656,861.40, 985,292.10 and 630,617.40

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Solution

The fourth proportional to 656,861.40, 985,292.10 and 630,617.40 is: 945,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,861.40 : 985,292.10 = 630,617.40 : x
  2. Step 2: Convert to fraction form
    656,861.40/985,292.10 = 630,617.40/x
  3. Step 3: Cross multiply
    656,861.40x = 985,292.10 × 630,617.40
  4. Step 4: Simplify right side
    656,861.40x = 621,342,342,342.54
  5. Step 5: Solve for x
    x = 621,342,342,342.54/656,861.40
  6. Step 6: Final answer
    x = 945,926.10

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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.