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Finding the Fourth Proportional to 191,515.83, 287,262.95 and 84,869.07

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Solution

The fourth proportional to 191,515.83, 287,262.95 and 84,869.07 is: 127,298.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,515.83 : 287,262.95 = 84,869.07 : x
  2. Step 2: Convert to fraction form
    191,515.83/287,262.95 = 84,869.07/x
  3. Step 3: Cross multiply
    191,515.83x = 287,262.95 × 84,869.07
  4. Step 4: Simplify right side
    191,515.83x = 24,379,738,987.61
  5. Step 5: Solve for x
    x = 24,379,738,987.61/191,515.83
  6. Step 6: Final answer
    x = 127,298.82

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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.