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Finding the Fourth Proportional to 98,924.60, 148,386.90 and 28,806.20

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Solution

The fourth proportional to 98,924.60, 148,386.90 and 28,806.20 is: 43,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,924.60 : 148,386.90 = 28,806.20 : x
  2. Step 2: Convert to fraction form
    98,924.60/148,386.90 = 28,806.20/x
  3. Step 3: Cross multiply
    98,924.60x = 148,386.90 × 28,806.20
  4. Step 4: Simplify right side
    98,924.60x = 4,274,462,718.78
  5. Step 5: Solve for x
    x = 4,274,462,718.78/98,924.60
  6. Step 6: Final answer
    x = 43,209.30

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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.