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Finding the Fourth Proportional to 121,300.40, 181,950.60 and 89,807.60

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Solution

The fourth proportional to 121,300.40, 181,950.60 and 89,807.60 is: 134,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,300.40 : 181,950.60 = 89,807.60 : x
  2. Step 2: Convert to fraction form
    121,300.40/181,950.60 = 89,807.60/x
  3. Step 3: Cross multiply
    121,300.40x = 181,950.60 × 89,807.60
  4. Step 4: Simplify right side
    121,300.40x = 16,340,546,704.56
  5. Step 5: Solve for x
    x = 16,340,546,704.56/121,300.40
  6. Step 6: Final answer
    x = 134,711.40

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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.