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Finding the Fourth Proportional to 111,594.90, 154,061.01 and 86,045.25

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Solution

The fourth proportional to 111,594.90, 154,061.01 and 86,045.25 is: 118,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,594.90 : 154,061.01 = 86,045.25 : x
  2. Step 2: Convert to fraction form
    111,594.90/154,061.01 = 86,045.25/x
  3. Step 3: Cross multiply
    111,594.90x = 154,061.01 × 86,045.25
  4. Step 4: Simplify right side
    111,594.90x = 13,256,218,120.70
  5. Step 5: Solve for x
    x = 13,256,218,120.70/111,594.90
  6. Step 6: Final answer
    x = 118,788.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.