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Finding the Fourth Proportional to 127,345, 191,017.50 and 39,793

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Solution

The fourth proportional to 127,345, 191,017.50 and 39,793 is: 59,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,345 : 191,017.50 = 39,793 : x
  2. Step 2: Convert to fraction form
    127,345/191,017.50 = 39,793/x
  3. Step 3: Cross multiply
    127,345x = 191,017.50 × 39,793
  4. Step 4: Simplify right side
    127,345x = 7,601,159,377.50
  5. Step 5: Solve for x
    x = 7,601,159,377.50/127,345
  6. Step 6: Final answer
    x = 59,689.50

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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.