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Finding the Fourth Proportional to 98,570.80, 147,856.20 and 82,824.40

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Solution

The fourth proportional to 98,570.80, 147,856.20 and 82,824.40 is: 124,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,570.80 : 147,856.20 = 82,824.40 : x
  2. Step 2: Convert to fraction form
    98,570.80/147,856.20 = 82,824.40/x
  3. Step 3: Cross multiply
    98,570.80x = 147,856.20 × 82,824.40
  4. Step 4: Simplify right side
    98,570.80x = 12,246,101,051.28
  5. Step 5: Solve for x
    x = 12,246,101,051.28/98,570.80
  6. Step 6: Final answer
    x = 124,236.60

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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.