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Finding the Fourth Proportional to 393,077.96, 542,462.10 and 223,340.84

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Solution

The fourth proportional to 393,077.96, 542,462.10 and 223,340.84 is: 308,218.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,077.96 : 542,462.10 = 223,340.84 : x
  2. Step 2: Convert to fraction form
    393,077.96/542,462.10 = 223,340.84/x
  3. Step 3: Cross multiply
    393,077.96x = 542,462.10 × 223,340.84
  4. Step 4: Simplify right side
    393,077.96x = 121,153,941,082.16
  5. Step 5: Solve for x
    x = 121,153,941,082.16/393,077.96
  6. Step 6: Final answer
    x = 308,218.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.