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Finding the Fourth Proportional to 210,895.79, 316,343.69 and 92,568.15

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Solution

The fourth proportional to 210,895.79, 316,343.69 and 92,568.15 is: 138,852.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,895.79 : 316,343.69 = 92,568.15 : x
  2. Step 2: Convert to fraction form
    210,895.79/316,343.69 = 92,568.15/x
  3. Step 3: Cross multiply
    210,895.79x = 316,343.69 × 92,568.15
  4. Step 4: Simplify right side
    210,895.79x = 29,283,349,684.63
  5. Step 5: Solve for x
    x = 29,283,349,684.63/210,895.79
  6. Step 6: Final answer
    x = 138,852.23

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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.