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Finding the Fourth Proportional to 39,407.34, 59,119.92 and 13,113.12

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Solution

The fourth proportional to 39,407.34, 59,119.92 and 13,113.12 is: 19,672.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,407.34 : 59,119.92 = 13,113.12 : x
  2. Step 2: Convert to fraction form
    39,407.34/59,119.92 = 13,113.12/x
  3. Step 3: Cross multiply
    39,407.34x = 59,119.92 × 13,113.12
  4. Step 4: Simplify right side
    39,407.34x = 775,246,605.35
  5. Step 5: Solve for x
    x = 775,246,605.35/39,407.34
  6. Step 6: Final answer
    x = 19,672.64

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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.