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Finding the Fourth Proportional to 100,790.66, 139,106.42 and 60,526.62

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Solution

The fourth proportional to 100,790.66, 139,106.42 and 60,526.62 is: 83,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,790.66 : 139,106.42 = 60,526.62 : x
  2. Step 2: Convert to fraction form
    100,790.66/139,106.42 = 60,526.62/x
  3. Step 3: Cross multiply
    100,790.66x = 139,106.42 × 60,526.62
  4. Step 4: Simplify right side
    100,790.66x = 8,419,641,120.27
  5. Step 5: Solve for x
    x = 8,419,641,120.27/100,790.66
  6. Step 6: Final answer
    x = 83,535.93

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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.