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Finding the Fourth Proportional to 70,468.79, 105,636.35 and 26,065.40

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Solution

The fourth proportional to 70,468.79, 105,636.35 and 26,065.40 is: 39,073.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,468.79 : 105,636.35 = 26,065.40 : x
  2. Step 2: Convert to fraction form
    70,468.79/105,636.35 = 26,065.40/x
  3. Step 3: Cross multiply
    70,468.79x = 105,636.35 × 26,065.40
  4. Step 4: Simplify right side
    70,468.79x = 2,753,453,058.78
  5. Step 5: Solve for x
    x = 2,753,453,058.78/70,468.79
  6. Step 6: Final answer
    x = 39,073.37

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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.