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Finding the Fourth Proportional to 72,614.60, 108,776.14 and 33,117.40

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Solution

The fourth proportional to 72,614.60, 108,776.14 and 33,117.40 is: 49,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,614.60 : 108,776.14 = 33,117.40 : x
  2. Step 2: Convert to fraction form
    72,614.60/108,776.14 = 33,117.40/x
  3. Step 3: Cross multiply
    72,614.60x = 108,776.14 × 33,117.40
  4. Step 4: Simplify right side
    72,614.60x = 3,602,382,938.84
  5. Step 5: Solve for x
    x = 3,602,382,938.84/72,614.60
  6. Step 6: Final answer
    x = 49,609.62

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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.