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Finding the Fourth Proportional to 191,215.80, 286,823.58 and 91,072.44

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Solution

The fourth proportional to 191,215.80, 286,823.58 and 91,072.44 is: 136,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,215.80 : 286,823.58 = 91,072.44 : x
  2. Step 2: Convert to fraction form
    191,215.80/286,823.58 = 91,072.44/x
  3. Step 3: Cross multiply
    191,215.80x = 286,823.58 × 91,072.44
  4. Step 4: Simplify right side
    191,215.80x = 26,121,723,280.14
  5. Step 5: Solve for x
    x = 26,121,723,280.14/191,215.80
  6. Step 6: Final answer
    x = 136,608.60

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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.