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Finding the Fourth Proportional to 98,452.96, 135,868.16 and 56,017.60

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Solution

The fourth proportional to 98,452.96, 135,868.16 and 56,017.60 is: 77,306.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,452.96 : 135,868.16 = 56,017.60 : x
  2. Step 2: Convert to fraction form
    98,452.96/135,868.16 = 56,017.60/x
  3. Step 3: Cross multiply
    98,452.96x = 135,868.16 × 56,017.60
  4. Step 4: Simplify right side
    98,452.96x = 7,611,008,239.62
  5. Step 5: Solve for x
    x = 7,611,008,239.62/98,452.96
  6. Step 6: Final answer
    x = 77,306.04

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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.