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Finding the Fourth Proportional to 70,354.86, 105,503.94 and 25,363.41

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Solution

The fourth proportional to 70,354.86, 105,503.94 and 25,363.41 is: 38,034.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,354.86 : 105,503.94 = 25,363.41 : x
  2. Step 2: Convert to fraction form
    70,354.86/105,503.94 = 25,363.41/x
  3. Step 3: Cross multiply
    70,354.86x = 105,503.94 × 25,363.41
  4. Step 4: Simplify right side
    70,354.86x = 2,675,939,686.84
  5. Step 5: Solve for x
    x = 2,675,939,686.84/70,354.86
  6. Step 6: Final answer
    x = 38,034.89

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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.