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Finding the Fourth Proportional to 621,443.48, 932,580.18 and 341,157.56

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Solution

The fourth proportional to 621,443.48, 932,580.18 and 341,157.56 is: 511,964.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,443.48 : 932,580.18 = 341,157.56 : x
  2. Step 2: Convert to fraction form
    621,443.48/932,580.18 = 341,157.56/x
  3. Step 3: Cross multiply
    621,443.48x = 932,580.18 × 341,157.56
  4. Step 4: Simplify right side
    621,443.48x = 318,156,778,713.16
  5. Step 5: Solve for x
    x = 318,156,778,713.16/621,443.48
  6. Step 6: Final answer
    x = 511,964.14

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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.