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Finding the Fourth Proportional to 86,902.74, 119,897.90 and 48,656.66

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Solution

The fourth proportional to 86,902.74, 119,897.90 and 48,656.66 is: 67,130.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,902.74 : 119,897.90 = 48,656.66 : x
  2. Step 2: Convert to fraction form
    86,902.74/119,897.90 = 48,656.66/x
  3. Step 3: Cross multiply
    86,902.74x = 119,897.90 × 48,656.66
  4. Step 4: Simplify right side
    86,902.74x = 5,833,831,355.01
  5. Step 5: Solve for x
    x = 5,833,831,355.01/86,902.74
  6. Step 6: Final answer
    x = 67,130.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.