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Finding the Fourth Proportional to 191,665.79, 287,499.75 and 79,285.13

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Solution

The fourth proportional to 191,665.79, 287,499.75 and 79,285.13 is: 118,928.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,665.79 : 287,499.75 = 79,285.13 : x
  2. Step 2: Convert to fraction form
    191,665.79/287,499.75 = 79,285.13/x
  3. Step 3: Cross multiply
    191,665.79x = 287,499.75 × 79,285.13
  4. Step 4: Simplify right side
    191,665.79x = 22,794,455,065.99
  5. Step 5: Solve for x
    x = 22,794,455,065.99/191,665.79
  6. Step 6: Final answer
    x = 118,928.13

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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.