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Finding the Fourth Proportional to 124,140.60, 186,210.90 and 108,588.60

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Solution

The fourth proportional to 124,140.60, 186,210.90 and 108,588.60 is: 162,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,140.60 : 186,210.90 = 108,588.60 : x
  2. Step 2: Convert to fraction form
    124,140.60/186,210.90 = 108,588.60/x
  3. Step 3: Cross multiply
    124,140.60x = 186,210.90 × 108,588.60
  4. Step 4: Simplify right side
    124,140.60x = 20,220,380,935.74
  5. Step 5: Solve for x
    x = 20,220,380,935.74/124,140.60
  6. Step 6: Final answer
    x = 162,882.90

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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.