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Finding the Fourth Proportional to 210,800.64, 316,247.13 and 61,047.03

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Solution

The fourth proportional to 210,800.64, 316,247.13 and 61,047.03 is: 91,583.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,800.64 : 316,247.13 = 61,047.03 : x
  2. Step 2: Convert to fraction form
    210,800.64/316,247.13 = 61,047.03/x
  3. Step 3: Cross multiply
    210,800.64x = 316,247.13 × 61,047.03
  4. Step 4: Simplify right side
    210,800.64x = 19,305,948,032.52
  5. Step 5: Solve for x
    x = 19,305,948,032.52/210,800.64
  6. Step 6: Final answer
    x = 91,583.92

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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.