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Finding the Fourth Proportional to 262,606.68, 393,810.80 and 85,066.02

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Solution

The fourth proportional to 262,606.68, 393,810.80 and 85,066.02 is: 127,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,606.68 : 393,810.80 = 85,066.02 : x
  2. Step 2: Convert to fraction form
    262,606.68/393,810.80 = 85,066.02/x
  3. Step 3: Cross multiply
    262,606.68x = 393,810.80 × 85,066.02
  4. Step 4: Simplify right side
    262,606.68x = 33,499,916,963.69
  5. Step 5: Solve for x
    x = 33,499,916,963.69/262,606.68
  6. Step 6: Final answer
    x = 127,566.89

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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.