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Finding the Fourth Proportional to 210,792.81, 316,205.70 and 61,035.33

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Solution

The fourth proportional to 210,792.81, 316,205.70 and 61,035.33 is: 91,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,792.81 : 316,205.70 = 61,035.33 : x
  2. Step 2: Convert to fraction form
    210,792.81/316,205.70 = 61,035.33/x
  3. Step 3: Cross multiply
    210,792.81x = 316,205.70 × 61,035.33
  4. Step 4: Simplify right side
    210,792.81x = 19,299,719,247.38
  5. Step 5: Solve for x
    x = 19,299,719,247.38/210,792.81
  6. Step 6: Final answer
    x = 91,557.77

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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.