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Finding the Fourth Proportional to 191,323.70, 287,115.15 and 124,601.30

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Solution

The fourth proportional to 191,323.70, 287,115.15 and 124,601.30 is: 186,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,323.70 : 287,115.15 = 124,601.30 : x
  2. Step 2: Convert to fraction form
    191,323.70/287,115.15 = 124,601.30/x
  3. Step 3: Cross multiply
    191,323.70x = 287,115.15 × 124,601.30
  4. Step 4: Simplify right side
    191,323.70x = 35,774,920,939.70
  5. Step 5: Solve for x
    x = 35,774,920,939.70/191,323.70
  6. Step 6: Final answer
    x = 186,986.35

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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.