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Finding the Fourth Proportional to 70,110.86, 105,046.64 and 38,547.36

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Solution

The fourth proportional to 70,110.86, 105,046.64 and 38,547.36 is: 57,755.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,110.86 : 105,046.64 = 38,547.36 : x
  2. Step 2: Convert to fraction form
    70,110.86/105,046.64 = 38,547.36/x
  3. Step 3: Cross multiply
    70,110.86x = 105,046.64 × 38,547.36
  4. Step 4: Simplify right side
    70,110.86x = 4,049,270,648.87
  5. Step 5: Solve for x
    x = 4,049,270,648.87/70,110.86
  6. Step 6: Final answer
    x = 57,755.26

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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.