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Finding the Fourth Proportional to 70,497.48, 105,712.78 and 40,924.36

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Solution

The fourth proportional to 70,497.48, 105,712.78 and 40,924.36 is: 61,367.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,497.48 : 105,712.78 = 40,924.36 : x
  2. Step 2: Convert to fraction form
    70,497.48/105,712.78 = 40,924.36/x
  3. Step 3: Cross multiply
    70,497.48x = 105,712.78 × 40,924.36
  4. Step 4: Simplify right side
    70,497.48x = 4,326,227,865.32
  5. Step 5: Solve for x
    x = 4,326,227,865.32/70,497.48
  6. Step 6: Final answer
    x = 61,367.13

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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.