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Finding the Fourth Proportional to 77,532.75, 107,011.86 and 47,311.59

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Solution

The fourth proportional to 77,532.75, 107,011.86 and 47,311.59 is: 65,300.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,532.75 : 107,011.86 = 47,311.59 : x
  2. Step 2: Convert to fraction form
    77,532.75/107,011.86 = 47,311.59/x
  3. Step 3: Cross multiply
    77,532.75x = 107,011.86 × 47,311.59
  4. Step 4: Simplify right side
    77,532.75x = 5,062,901,245.46
  5. Step 5: Solve for x
    x = 5,062,901,245.46/77,532.75
  6. Step 6: Final answer
    x = 65,300.16

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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.