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Finding the Fourth Proportional to 661,691.00, 992,001.86 and 256,674.08

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Solution

The fourth proportional to 661,691.00, 992,001.86 and 256,674.08 is: 384,803.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,691.00 : 992,001.86 = 256,674.08 : x
  2. Step 2: Convert to fraction form
    661,691.00/992,001.86 = 256,674.08/x
  3. Step 3: Cross multiply
    661,691.00x = 992,001.86 × 256,674.08
  4. Step 4: Simplify right side
    661,691.00x = 254,621,159,172.09
  5. Step 5: Solve for x
    x = 254,621,159,172.09/661,691.00
  6. Step 6: Final answer
    x = 384,803.72

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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.