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Finding the Fourth Proportional to 84,845.20, 127,008.60 and 84,845.20

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Solution

The fourth proportional to 84,845.20, 127,008.60 and 84,845.20 is: 127,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,845.20 : 127,008.60 = 84,845.20 : x
  2. Step 2: Convert to fraction form
    84,845.20/127,008.60 = 84,845.20/x
  3. Step 3: Cross multiply
    84,845.20x = 127,008.60 × 84,845.20
  4. Step 4: Simplify right side
    84,845.20x = 10,776,070,068.72
  5. Step 5: Solve for x
    x = 10,776,070,068.72/84,845.20
  6. Step 6: Final answer
    x = 127,008.60

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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.