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Finding the Fourth Proportional to 77,812.72, 116,689.68 and 25,208.08

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Solution

The fourth proportional to 77,812.72, 116,689.68 and 25,208.08 is: 37,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.72 : 116,689.68 = 25,208.08 : x
  2. Step 2: Convert to fraction form
    77,812.72/116,689.68 = 25,208.08/x
  3. Step 3: Cross multiply
    77,812.72x = 116,689.68 × 25,208.08
  4. Step 4: Simplify right side
    77,812.72x = 2,941,522,788.61
  5. Step 5: Solve for x
    x = 2,941,522,788.61/77,812.72
  6. Step 6: Final answer
    x = 37,802.60

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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.