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Finding the Fourth Proportional to 418,778.81, 578,017.40 and 237,596.79

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Solution

The fourth proportional to 418,778.81, 578,017.40 and 237,596.79 is: 327,941.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,778.81 : 578,017.40 = 237,596.79 : x
  2. Step 2: Convert to fraction form
    418,778.81/578,017.40 = 237,596.79/x
  3. Step 3: Cross multiply
    418,778.81x = 578,017.40 × 237,596.79
  4. Step 4: Simplify right side
    418,778.81x = 137,335,077,616.16
  5. Step 5: Solve for x
    x = 137,335,077,616.16/418,778.81
  6. Step 6: Final answer
    x = 327,941.81

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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.