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Finding the Fourth Proportional to 73,211.70, 109,574.55 and 53,164.20

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Solution

The fourth proportional to 73,211.70, 109,574.55 and 53,164.20 is: 79,569.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,211.70 : 109,574.55 = 53,164.20 : x
  2. Step 2: Convert to fraction form
    73,211.70/109,574.55 = 53,164.20/x
  3. Step 3: Cross multiply
    73,211.70x = 109,574.55 × 53,164.20
  4. Step 4: Simplify right side
    73,211.70x = 5,825,443,291.11
  5. Step 5: Solve for x
    x = 5,825,443,291.11/73,211.70
  6. Step 6: Final answer
    x = 79,569.84

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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.