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Finding the Fourth Proportional to 136,756.54, 205,108.75 and 57,926.13

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Solution

The fourth proportional to 136,756.54, 205,108.75 and 57,926.13 is: 86,878.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,756.54 : 205,108.75 = 57,926.13 : x
  2. Step 2: Convert to fraction form
    136,756.54/205,108.75 = 57,926.13/x
  3. Step 3: Cross multiply
    136,756.54x = 205,108.75 × 57,926.13
  4. Step 4: Simplify right side
    136,756.54x = 11,881,156,116.64
  5. Step 5: Solve for x
    x = 11,881,156,116.64/136,756.54
  6. Step 6: Final answer
    x = 86,878.16

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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.