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Finding the Fourth Proportional to 40,499.61, 60,749.96 and 14,205.12

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Solution

The fourth proportional to 40,499.61, 60,749.96 and 14,205.12 is: 21,307.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,499.61 : 60,749.96 = 14,205.12 : x
  2. Step 2: Convert to fraction form
    40,499.61/60,749.96 = 14,205.12/x
  3. Step 3: Cross multiply
    40,499.61x = 60,749.96 × 14,205.12
  4. Step 4: Simplify right side
    40,499.61x = 862,960,400.77
  5. Step 5: Solve for x
    x = 862,960,400.77/40,499.61
  6. Step 6: Final answer
    x = 21,307.87

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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.