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Finding the Fourth Proportional to 210,112.84, 315,139.56 and 60,365.98

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Solution

The fourth proportional to 210,112.84, 315,139.56 and 60,365.98 is: 90,540.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,112.84 : 315,139.56 = 60,365.98 : x
  2. Step 2: Convert to fraction form
    210,112.84/315,139.56 = 60,365.98/x
  3. Step 3: Cross multiply
    210,112.84x = 315,139.56 × 60,365.98
  4. Step 4: Simplify right side
    210,112.84x = 19,023,708,376.17
  5. Step 5: Solve for x
    x = 19,023,708,376.17/210,112.84
  6. Step 6: Final answer
    x = 90,540.44

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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.