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Finding the Fourth Proportional to 342,006.40, 471,954.08 and 189,036.64

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Solution

The fourth proportional to 342,006.40, 471,954.08 and 189,036.64 is: 260,862.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,006.40 : 471,954.08 = 189,036.64 : x
  2. Step 2: Convert to fraction form
    342,006.40/471,954.08 = 189,036.64/x
  3. Step 3: Cross multiply
    342,006.40x = 471,954.08 × 189,036.64
  4. Step 4: Simplify right side
    342,006.40x = 89,216,613,517.49
  5. Step 5: Solve for x
    x = 89,216,613,517.49/342,006.40
  6. Step 6: Final answer
    x = 260,862.41

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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.