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Finding the Fourth Proportional to 1,242,425.55, 1,740,576.75 and 1,242,425.55

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Solution

The fourth proportional to 1,242,425.55, 1,740,576.75 and 1,242,425.55 is: 1,740,576.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,425.55 : 1,740,576.75 = 1,242,425.55 : x
  2. Step 2: Convert to fraction form
    1,242,425.55/1,740,576.75 = 1,242,425.55/x
  3. Step 3: Cross multiply
    1,242,425.55x = 1,740,576.75 × 1,242,425.55
  4. Step 4: Simplify right side
    1,242,425.55x = 2,162,537,025,935.96
  5. Step 5: Solve for x
    x = 2,162,537,025,935.96/1,242,425.55
  6. Step 6: Final answer
    x = 1,740,576.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.