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Finding the Fourth Proportional to 440,520.12, 663,741.54 and 398,447.10

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Solution

The fourth proportional to 440,520.12, 663,741.54 and 398,447.10 is: 600,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,520.12 : 663,741.54 = 398,447.10 : x
  2. Step 2: Convert to fraction form
    440,520.12/663,741.54 = 398,447.10/x
  3. Step 3: Cross multiply
    440,520.12x = 663,741.54 × 398,447.10
  4. Step 4: Simplify right side
    440,520.12x = 264,465,891,762.53
  5. Step 5: Solve for x
    x = 264,465,891,762.53/440,520.12
  6. Step 6: Final answer
    x = 600,349.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.