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Finding the Fourth Proportional to 71,395.20, 98,468.16 and 44,486.40

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Solution

The fourth proportional to 71,395.20, 98,468.16 and 44,486.40 is: 61,355.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,395.20 : 98,468.16 = 44,486.40 : x
  2. Step 2: Convert to fraction form
    71,395.20/98,468.16 = 44,486.40/x
  3. Step 3: Cross multiply
    71,395.20x = 98,468.16 × 44,486.40
  4. Step 4: Simplify right side
    71,395.20x = 4,380,493,953.02
  5. Step 5: Solve for x
    x = 4,380,493,953.02/71,395.20
  6. Step 6: Final answer
    x = 61,355.58

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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.