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Finding the Fourth Proportional to 210,752.94, 316,168.41 and 66,695.04

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Solution

The fourth proportional to 210,752.94, 316,168.41 and 66,695.04 is: 100,054.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,752.94 : 316,168.41 = 66,695.04 : x
  2. Step 2: Convert to fraction form
    210,752.94/316,168.41 = 66,695.04/x
  3. Step 3: Cross multiply
    210,752.94x = 316,168.41 × 66,695.04
  4. Step 4: Simplify right side
    210,752.94x = 21,086,864,751.69
  5. Step 5: Solve for x
    x = 21,086,864,751.69/210,752.94
  6. Step 6: Final answer
    x = 100,054.90

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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.