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Finding the Fourth Proportional to 69,480.34, 103,971.37 and 60,152.45

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Solution

The fourth proportional to 69,480.34, 103,971.37 and 60,152.45 is: 90,012.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,480.34 : 103,971.37 = 60,152.45 : x
  2. Step 2: Convert to fraction form
    69,480.34/103,971.37 = 60,152.45/x
  3. Step 3: Cross multiply
    69,480.34x = 103,971.37 × 60,152.45
  4. Step 4: Simplify right side
    69,480.34x = 6,254,132,635.36
  5. Step 5: Solve for x
    x = 6,254,132,635.36/69,480.34
  6. Step 6: Final answer
    x = 90,012.98

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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.