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Finding the Fourth Proportional to 42,909.70, 59,201.63 and 25,918.99

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Solution

The fourth proportional to 42,909.70, 59,201.63 and 25,918.99 is: 35,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,909.70 : 59,201.63 = 25,918.99 : x
  2. Step 2: Convert to fraction form
    42,909.70/59,201.63 = 25,918.99/x
  3. Step 3: Cross multiply
    42,909.70x = 59,201.63 × 25,918.99
  4. Step 4: Simplify right side
    42,909.70x = 1,534,446,421.35
  5. Step 5: Solve for x
    x = 1,534,446,421.35/42,909.70
  6. Step 6: Final answer
    x = 35,759.90

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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.