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Finding the Fourth Proportional to 191,066.60, 286,205.87 and 111,940.76

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Solution

The fourth proportional to 191,066.60, 286,205.87 and 111,940.76 is: 167,680.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,066.60 : 286,205.87 = 111,940.76 : x
  2. Step 2: Convert to fraction form
    191,066.60/286,205.87 = 111,940.76/x
  3. Step 3: Cross multiply
    191,066.60x = 286,205.87 × 111,940.76
  4. Step 4: Simplify right side
    191,066.60x = 32,038,101,453.08
  5. Step 5: Solve for x
    x = 32,038,101,453.08/191,066.60
  6. Step 6: Final answer
    x = 167,680.29

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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.