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Finding the Fourth Proportional to 191,713.91, 287,571.07 and 191,437.03

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Solution

The fourth proportional to 191,713.91, 287,571.07 and 191,437.03 is: 287,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,713.91 : 287,571.07 = 191,437.03 : x
  2. Step 2: Convert to fraction form
    191,713.91/287,571.07 = 191,437.03/x
  3. Step 3: Cross multiply
    191,713.91x = 287,571.07 × 191,437.03
  4. Step 4: Simplify right side
    191,713.91x = 55,051,751,314.39
  5. Step 5: Solve for x
    x = 55,051,751,314.39/191,713.91
  6. Step 6: Final answer
    x = 287,155.74

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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.