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Finding the Fourth Proportional to 60,699.28, 91,058.52 and 19,136.56

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Solution

The fourth proportional to 60,699.28, 91,058.52 and 19,136.56 is: 28,707.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,699.28 : 91,058.52 = 19,136.56 : x
  2. Step 2: Convert to fraction form
    60,699.28/91,058.52 = 19,136.56/x
  3. Step 3: Cross multiply
    60,699.28x = 91,058.52 × 19,136.56
  4. Step 4: Simplify right side
    60,699.28x = 1,742,546,831.49
  5. Step 5: Solve for x
    x = 1,742,546,831.49/60,699.28
  6. Step 6: Final answer
    x = 28,707.87

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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.