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Finding the Fourth Proportional to 47,710.20, 66,706.80 and 47,710.20

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Solution

The fourth proportional to 47,710.20, 66,706.80 and 47,710.20 is: 66,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,710.20 : 66,706.80 = 47,710.20 : x
  2. Step 2: Convert to fraction form
    47,710.20/66,706.80 = 47,710.20/x
  3. Step 3: Cross multiply
    47,710.20x = 66,706.80 × 47,710.20
  4. Step 4: Simplify right side
    47,710.20x = 3,182,594,769.36
  5. Step 5: Solve for x
    x = 3,182,594,769.36/47,710.20
  6. Step 6: Final answer
    x = 66,706.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.