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Finding the Fourth Proportional to 48,555.40, 68,115.80 and 48,555.40

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Solution

The fourth proportional to 48,555.40, 68,115.80 and 48,555.40 is: 68,115.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,555.40 : 68,115.80 = 48,555.40 : x
  2. Step 2: Convert to fraction form
    48,555.40/68,115.80 = 48,555.40/x
  3. Step 3: Cross multiply
    48,555.40x = 68,115.80 × 48,555.40
  4. Step 4: Simplify right side
    48,555.40x = 3,307,389,915.32
  5. Step 5: Solve for x
    x = 3,307,389,915.32/48,555.40
  6. Step 6: Final answer
    x = 68,115.80

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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.