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Finding the Fourth Proportional to 86,895.70, 119,906.15 and 48,649.93

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Solution

The fourth proportional to 86,895.70, 119,906.15 and 48,649.93 is: 67,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,895.70 : 119,906.15 = 48,649.93 : x
  2. Step 2: Convert to fraction form
    86,895.70/119,906.15 = 48,649.93/x
  3. Step 3: Cross multiply
    86,895.70x = 119,906.15 × 48,649.93
  4. Step 4: Simplify right side
    86,895.70x = 5,833,425,804.07
  5. Step 5: Solve for x
    x = 5,833,425,804.07/86,895.70
  6. Step 6: Final answer
    x = 67,131.35

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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.