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Finding the Fourth Proportional to 69,640.80, 104,461.20 and 62,059.20

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Solution

The fourth proportional to 69,640.80, 104,461.20 and 62,059.20 is: 93,088.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,640.80 : 104,461.20 = 62,059.20 : x
  2. Step 2: Convert to fraction form
    69,640.80/104,461.20 = 62,059.20/x
  3. Step 3: Cross multiply
    69,640.80x = 104,461.20 × 62,059.20
  4. Step 4: Simplify right side
    69,640.80x = 6,482,778,503.04
  5. Step 5: Solve for x
    x = 6,482,778,503.04/69,640.80
  6. Step 6: Final answer
    x = 93,088.80

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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.