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Finding the Fourth Proportional to 69,971.76, 104,988.58 and 36,683.87

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Solution

The fourth proportional to 69,971.76, 104,988.58 and 36,683.87 is: 55,042.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,971.76 : 104,988.58 = 36,683.87 : x
  2. Step 2: Convert to fraction form
    69,971.76/104,988.58 = 36,683.87/x
  3. Step 3: Cross multiply
    69,971.76x = 104,988.58 × 36,683.87
  4. Step 4: Simplify right side
    69,971.76x = 3,851,386,803.55
  5. Step 5: Solve for x
    x = 3,851,386,803.55/69,971.76
  6. Step 6: Final answer
    x = 55,042.02

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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.