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Finding the Fourth Proportional to 191,505.84, 287,259.06 and 79,062.65

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Solution

The fourth proportional to 191,505.84, 287,259.06 and 79,062.65 is: 118,594.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,505.84 : 287,259.06 = 79,062.65 : x
  2. Step 2: Convert to fraction form
    191,505.84/287,259.06 = 79,062.65/x
  3. Step 3: Cross multiply
    191,505.84x = 287,259.06 × 79,062.65
  4. Step 4: Simplify right side
    191,505.84x = 22,711,461,083.81
  5. Step 5: Solve for x
    x = 22,711,461,083.81/191,505.84
  6. Step 6: Final answer
    x = 118,594.09

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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.