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Finding the Fourth Proportional to 69,909.75, 96,482.75 and 39,703.23

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Solution

The fourth proportional to 69,909.75, 96,482.75 and 39,703.23 is: 54,794.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,909.75 : 96,482.75 = 39,703.23 : x
  2. Step 2: Convert to fraction form
    69,909.75/96,482.75 = 39,703.23/x
  3. Step 3: Cross multiply
    69,909.75x = 96,482.75 × 39,703.23
  4. Step 4: Simplify right side
    69,909.75x = 3,830,676,615.77
  5. Step 5: Solve for x
    x = 3,830,676,615.77/69,909.75
  6. Step 6: Final answer
    x = 54,794.60

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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.