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Finding the Fourth Proportional to 39,428, 54,419.88 and 26,001.68

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Solution

The fourth proportional to 39,428, 54,419.88 and 26,001.68 is: 35,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428 : 54,419.88 = 26,001.68 : x
  2. Step 2: Convert to fraction form
    39,428/54,419.88 = 26,001.68/x
  3. Step 3: Cross multiply
    39,428x = 54,419.88 × 26,001.68
  4. Step 4: Simplify right side
    39,428x = 1,415,008,305.40
  5. Step 5: Solve for x
    x = 1,415,008,305.40/39,428
  6. Step 6: Final answer
    x = 35,888.41

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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.