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Finding the Fourth Proportional to 289,653.06, 399,720.60 and 176,475.90

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Solution

The fourth proportional to 289,653.06, 399,720.60 and 176,475.90 is: 243,536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,653.06 : 399,720.60 = 176,475.90 : x
  2. Step 2: Convert to fraction form
    289,653.06/399,720.60 = 176,475.90/x
  3. Step 3: Cross multiply
    289,653.06x = 399,720.60 × 176,475.90
  4. Step 4: Simplify right side
    289,653.06x = 70,541,052,633.54
  5. Step 5: Solve for x
    x = 70,541,052,633.54/289,653.06
  6. Step 6: Final answer
    x = 243,536.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.