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Finding the Fourth Proportional to 210,479.88, 315,681.87 and 60,683.38

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Solution

The fourth proportional to 210,479.88, 315,681.87 and 60,683.38 is: 91,014.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,479.88 : 315,681.87 = 60,683.38 : x
  2. Step 2: Convert to fraction form
    210,479.88/315,681.87 = 60,683.38/x
  3. Step 3: Cross multiply
    210,479.88x = 315,681.87 × 60,683.38
  4. Step 4: Simplify right side
    210,479.88x = 19,156,642,314.68
  5. Step 5: Solve for x
    x = 19,156,642,314.68/210,479.88
  6. Step 6: Final answer
    x = 91,014.12

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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.