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Finding the Fourth Proportional to 264,388.64, 396,582.95 and 77,400.14

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Solution

The fourth proportional to 264,388.64, 396,582.95 and 77,400.14 is: 116,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,388.64 : 396,582.95 = 77,400.14 : x
  2. Step 2: Convert to fraction form
    264,388.64/396,582.95 = 77,400.14/x
  3. Step 3: Cross multiply
    264,388.64x = 396,582.95 × 77,400.14
  4. Step 4: Simplify right side
    264,388.64x = 30,695,575,851.61
  5. Step 5: Solve for x
    x = 30,695,575,851.61/264,388.64
  6. Step 6: Final answer
    x = 116,100.21

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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.