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Finding the Fourth Proportional to 186,618.60, 280,619.10 and 156,205.80

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Solution

The fourth proportional to 186,618.60, 280,619.10 and 156,205.80 is: 234,887.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,618.60 : 280,619.10 = 156,205.80 : x
  2. Step 2: Convert to fraction form
    186,618.60/280,619.10 = 156,205.80/x
  3. Step 3: Cross multiply
    186,618.60x = 280,619.10 × 156,205.80
  4. Step 4: Simplify right side
    186,618.60x = 43,834,331,010.78
  5. Step 5: Solve for x
    x = 43,834,331,010.78/186,618.60
  6. Step 6: Final answer
    x = 234,887.26

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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.