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Finding the Fourth Proportional to 70,421.01, 105,557.70 and 26,019.44

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Solution

The fourth proportional to 70,421.01, 105,557.70 and 26,019.44 is: 39,001.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,421.01 : 105,557.70 = 26,019.44 : x
  2. Step 2: Convert to fraction form
    70,421.01/105,557.70 = 26,019.44/x
  3. Step 3: Cross multiply
    70,421.01x = 105,557.70 × 26,019.44
  4. Step 4: Simplify right side
    70,421.01x = 2,746,552,241.69
  5. Step 5: Solve for x
    x = 2,746,552,241.69/70,421.01
  6. Step 6: Final answer
    x = 39,001.89

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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.