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Finding the Fourth Proportional to 191,702.70, 287,588.61 and 65,335.95

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Solution

The fourth proportional to 191,702.70, 287,588.61 and 65,335.95 is: 98,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,702.70 : 287,588.61 = 65,335.95 : x
  2. Step 2: Convert to fraction form
    191,702.70/287,588.61 = 65,335.95/x
  3. Step 3: Cross multiply
    191,702.70x = 287,588.61 × 65,335.95
  4. Step 4: Simplify right side
    191,702.70x = 18,789,875,043.53
  5. Step 5: Solve for x
    x = 18,789,875,043.53/191,702.70
  6. Step 6: Final answer
    x = 98,015.70

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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.