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Finding the Fourth Proportional to 60,497.70, 90,637.20 and 51,749.70

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Solution

The fourth proportional to 60,497.70, 90,637.20 and 51,749.70 is: 77,531.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,497.70 : 90,637.20 = 51,749.70 : x
  2. Step 2: Convert to fraction form
    60,497.70/90,637.20 = 51,749.70/x
  3. Step 3: Cross multiply
    60,497.70x = 90,637.20 × 51,749.70
  4. Step 4: Simplify right side
    60,497.70x = 4,690,447,908.84
  5. Step 5: Solve for x
    x = 4,690,447,908.84/60,497.70
  6. Step 6: Final answer
    x = 77,531.01

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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.