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Finding the Fourth Proportional to 127,798.10, 191,553.15 and 61,270.10

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Solution

The fourth proportional to 127,798.10, 191,553.15 and 61,270.10 is: 91,836.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,798.10 : 191,553.15 = 61,270.10 : x
  2. Step 2: Convert to fraction form
    127,798.10/191,553.15 = 61,270.10/x
  3. Step 3: Cross multiply
    127,798.10x = 191,553.15 × 61,270.10
  4. Step 4: Simplify right side
    127,798.10x = 11,736,480,655.82
  5. Step 5: Solve for x
    x = 11,736,480,655.82/127,798.10
  6. Step 6: Final answer
    x = 91,836.11

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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.