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Finding the Fourth Proportional to 79,459.49, 109,608.28 and 47,609.93

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Solution

The fourth proportional to 79,459.49, 109,608.28 and 47,609.93 is: 65,674.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,459.49 : 109,608.28 = 47,609.93 : x
  2. Step 2: Convert to fraction form
    79,459.49/109,608.28 = 47,609.93/x
  3. Step 3: Cross multiply
    79,459.49x = 109,608.28 × 47,609.93
  4. Step 4: Simplify right side
    79,459.49x = 5,218,442,538.22
  5. Step 5: Solve for x
    x = 5,218,442,538.22/79,459.49
  6. Step 6: Final answer
    x = 65,674.25

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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.