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Finding the Fourth Proportional to 62,488.40, 86,239.10 and 35,639.32

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Solution

The fourth proportional to 62,488.40, 86,239.10 and 35,639.32 is: 49,185.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,488.40 : 86,239.10 = 35,639.32 : x
  2. Step 2: Convert to fraction form
    62,488.40/86,239.10 = 35,639.32/x
  3. Step 3: Cross multiply
    62,488.40x = 86,239.10 × 35,639.32
  4. Step 4: Simplify right side
    62,488.40x = 3,073,502,881.41
  5. Step 5: Solve for x
    x = 3,073,502,881.41/62,488.40
  6. Step 6: Final answer
    x = 49,185.17

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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.