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Finding the Fourth Proportional to 264,234, 396,392.28 and 86,700.63

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Solution

The fourth proportional to 264,234, 396,392.28 and 86,700.63 is: 130,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,234 : 396,392.28 = 86,700.63 : x
  2. Step 2: Convert to fraction form
    264,234/396,392.28 = 86,700.63/x
  3. Step 3: Cross multiply
    264,234x = 396,392.28 × 86,700.63
  4. Step 4: Simplify right side
    264,234x = 34,367,460,403.14
  5. Step 5: Solve for x
    x = 34,367,460,403.14/264,234
  6. Step 6: Final answer
    x = 130,064.49

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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.