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Finding the Fourth Proportional to 83,699.55, 115,525.31 and 47,910.24

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Solution

The fourth proportional to 83,699.55, 115,525.31 and 47,910.24 is: 66,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,699.55 : 115,525.31 = 47,910.24 : x
  2. Step 2: Convert to fraction form
    83,699.55/115,525.31 = 47,910.24/x
  3. Step 3: Cross multiply
    83,699.55x = 115,525.31 × 47,910.24
  4. Step 4: Simplify right side
    83,699.55x = 5,534,845,088.62
  5. Step 5: Solve for x
    x = 5,534,845,088.62/83,699.55
  6. Step 6: Final answer
    x = 66,127.54

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1.5x scale

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.