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Finding the Fourth Proportional to 116,115.90, 160,252.47 and 65,809.50

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Solution

The fourth proportional to 116,115.90, 160,252.47 and 65,809.50 is: 90,824.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,115.90 : 160,252.47 = 65,809.50 : x
  2. Step 2: Convert to fraction form
    116,115.90/160,252.47 = 65,809.50/x
  3. Step 3: Cross multiply
    116,115.90x = 160,252.47 × 65,809.50
  4. Step 4: Simplify right side
    116,115.90x = 10,546,134,924.47
  5. Step 5: Solve for x
    x = 10,546,134,924.47/116,115.90
  6. Step 6: Final answer
    x = 90,824.21

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1.5x scale

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.