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Finding the Fourth Proportional to 235,105.47, 352,547.03 and 91,078.75

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Solution

The fourth proportional to 235,105.47, 352,547.03 and 91,078.75 is: 136,575.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,105.47 : 352,547.03 = 91,078.75 : x
  2. Step 2: Convert to fraction form
    235,105.47/352,547.03 = 91,078.75/x
  3. Step 3: Cross multiply
    235,105.47x = 352,547.03 × 91,078.75
  4. Step 4: Simplify right side
    235,105.47x = 32,109,543,476.99
  5. Step 5: Solve for x
    x = 32,109,543,476.99/235,105.47
  6. Step 6: Final answer
    x = 136,575.06

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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.