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Finding the Fourth Proportional to 70,188.44, 105,355.56 and 40,663.94

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Solution

The fourth proportional to 70,188.44, 105,355.56 and 40,663.94 is: 61,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,188.44 : 105,355.56 = 40,663.94 : x
  2. Step 2: Convert to fraction form
    70,188.44/105,355.56 = 40,663.94/x
  3. Step 3: Cross multiply
    70,188.44x = 105,355.56 × 40,663.94
  4. Step 4: Simplify right side
    70,188.44x = 4,284,172,170.51
  5. Step 5: Solve for x
    x = 4,284,172,170.51/70,188.44
  6. Step 6: Final answer
    x = 61,038.14

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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.