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Finding the Fourth Proportional to 62,390.48, 86,073.16 and 45,357.40

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Solution

The fourth proportional to 62,390.48, 86,073.16 and 45,357.40 is: 62,574.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,390.48 : 86,073.16 = 45,357.40 : x
  2. Step 2: Convert to fraction form
    62,390.48/86,073.16 = 45,357.40/x
  3. Step 3: Cross multiply
    62,390.48x = 86,073.16 × 45,357.40
  4. Step 4: Simplify right side
    62,390.48x = 3,904,054,747.38
  5. Step 5: Solve for x
    x = 3,904,054,747.38/62,390.48
  6. Step 6: Final answer
    x = 62,574.53

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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.