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Finding the Fourth Proportional to 39,290, 58,911.44 and 26,655.28

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Solution

The fourth proportional to 39,290, 58,911.44 and 26,655.28 is: 39,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,290 : 58,911.44 = 26,655.28 : x
  2. Step 2: Convert to fraction form
    39,290/58,911.44 = 26,655.28/x
  3. Step 3: Cross multiply
    39,290x = 58,911.44 × 26,655.28
  4. Step 4: Simplify right side
    39,290x = 1,570,300,928.40
  5. Step 5: Solve for x
    x = 1,570,300,928.40/39,290
  6. Step 6: Final answer
    x = 39,966.94

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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.