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Finding the Fourth Proportional to 127,341, 191,011.50 and 39,789

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Solution

The fourth proportional to 127,341, 191,011.50 and 39,789 is: 59,683.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,341 : 191,011.50 = 39,789 : x
  2. Step 2: Convert to fraction form
    127,341/191,011.50 = 39,789/x
  3. Step 3: Cross multiply
    127,341x = 191,011.50 × 39,789
  4. Step 4: Simplify right side
    127,341x = 7,600,156,573.50
  5. Step 5: Solve for x
    x = 7,600,156,573.50/127,341
  6. Step 6: Final answer
    x = 59,683.50

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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.