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Finding the Fourth Proportional to 79,394.92, 109,573.72 and 45,406.58

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Solution

The fourth proportional to 79,394.92, 109,573.72 and 45,406.58 is: 62,666.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,394.92 : 109,573.72 = 45,406.58 : x
  2. Step 2: Convert to fraction form
    79,394.92/109,573.72 = 45,406.58/x
  3. Step 3: Cross multiply
    79,394.92x = 109,573.72 × 45,406.58
  4. Step 4: Simplify right side
    79,394.92x = 4,975,367,883.08
  5. Step 5: Solve for x
    x = 4,975,367,883.08/79,394.92
  6. Step 6: Final answer
    x = 62,666.07

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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.