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Finding the Fourth Proportional to 191,617.88, 287,301.66 and 91,774.88

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Solution

The fourth proportional to 191,617.88, 287,301.66 and 91,774.88 is: 137,602.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,617.88 : 287,301.66 = 91,774.88 : x
  2. Step 2: Convert to fraction form
    191,617.88/287,301.66 = 91,774.88/x
  3. Step 3: Cross multiply
    191,617.88x = 287,301.66 × 91,774.88
  4. Step 4: Simplify right side
    191,617.88x = 26,367,075,370.30
  5. Step 5: Solve for x
    x = 26,367,075,370.30/191,617.88
  6. Step 6: Final answer
    x = 137,602.37

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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.