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Finding the Fourth Proportional to 231,598.83, 319,605.91 and 129,623.88

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Solution

The fourth proportional to 231,598.83, 319,605.91 and 129,623.88 is: 178,880.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,598.83 : 319,605.91 = 129,623.88 : x
  2. Step 2: Convert to fraction form
    231,598.83/319,605.91 = 129,623.88/x
  3. Step 3: Cross multiply
    231,598.83x = 319,605.91 × 129,623.88
  4. Step 4: Simplify right side
    231,598.83x = 41,428,558,125.13
  5. Step 5: Solve for x
    x = 41,428,558,125.13/231,598.83
  6. Step 6: Final answer
    x = 178,880.69

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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.