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Finding the Fourth Proportional to 127,557.90, 191,340 and 61,005.06

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Solution

The fourth proportional to 127,557.90, 191,340 and 61,005.06 is: 91,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,557.90 : 191,340 = 61,005.06 : x
  2. Step 2: Convert to fraction form
    127,557.90/191,340 = 61,005.06/x
  3. Step 3: Cross multiply
    127,557.90x = 191,340 × 61,005.06
  4. Step 4: Simplify right side
    127,557.90x = 11,672,708,180.40
  5. Step 5: Solve for x
    x = 11,672,708,180.40/127,557.90
  6. Step 6: Final answer
    x = 91,509.10

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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.