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Finding the Fourth Proportional to 161,806.20, 242,612.10 and 83,074.20

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Solution

The fourth proportional to 161,806.20, 242,612.10 and 83,074.20 is: 124,561.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,806.20 : 242,612.10 = 83,074.20 : x
  2. Step 2: Convert to fraction form
    161,806.20/242,612.10 = 83,074.20/x
  3. Step 3: Cross multiply
    161,806.20x = 242,612.10 × 83,074.20
  4. Step 4: Simplify right side
    161,806.20x = 20,154,806,117.82
  5. Step 5: Solve for x
    x = 20,154,806,117.82/161,806.20
  6. Step 6: Final answer
    x = 124,561.40

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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.