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Finding the Fourth Proportional to 85,248,375.60, 127,872,563.40 and 85,248,375.60

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Solution

The fourth proportional to 85,248,375.60, 127,872,563.40 and 85,248,375.60 is: 127,872,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248,375.60 : 127,872,563.40 = 85,248,375.60 : x
  2. Step 2: Convert to fraction form
    85,248,375.60/127,872,563.40 = 85,248,375.60/x
  3. Step 3: Cross multiply
    85,248,375.60x = 127,872,563.40 × 85,248,375.60
  4. Step 4: Simplify right side
    85,248,375.60x = 10,900,928,313,658,012
  5. Step 5: Solve for x
    x = 10,900,928,313,658,012/85,248,375.60
  6. Step 6: Final answer
    x = 127,872,563.40

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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.