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Finding the Fourth Proportional to 88,875.40, 133,053.90 and 79,544.20

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Solution

The fourth proportional to 88,875.40, 133,053.90 and 79,544.20 is: 119,084.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,875.40 : 133,053.90 = 79,544.20 : x
  2. Step 2: Convert to fraction form
    88,875.40/133,053.90 = 79,544.20/x
  3. Step 3: Cross multiply
    88,875.40x = 133,053.90 × 79,544.20
  4. Step 4: Simplify right side
    88,875.40x = 10,583,666,032.38
  5. Step 5: Solve for x
    x = 10,583,666,032.38/88,875.40
  6. Step 6: Final answer
    x = 119,084.31

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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.