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Finding the Fourth Proportional to 77,894.68, 107,368.73 and 60,869.34

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Solution

The fourth proportional to 77,894.68, 107,368.73 and 60,869.34 is: 83,901.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,894.68 : 107,368.73 = 60,869.34 : x
  2. Step 2: Convert to fraction form
    77,894.68/107,368.73 = 60,869.34/x
  3. Step 3: Cross multiply
    77,894.68x = 107,368.73 × 60,869.34
  4. Step 4: Simplify right side
    77,894.68x = 6,535,462,890.55
  5. Step 5: Solve for x
    x = 6,535,462,890.55/77,894.68
  6. Step 6: Final answer
    x = 83,901.28

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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.