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Finding the Fourth Proportional to 68,341.22, 102,428.72 and 48,356.47

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Solution

The fourth proportional to 68,341.22, 102,428.72 and 48,356.47 is: 72,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,341.22 : 102,428.72 = 48,356.47 : x
  2. Step 2: Convert to fraction form
    68,341.22/102,428.72 = 48,356.47/x
  3. Step 3: Cross multiply
    68,341.22x = 102,428.72 × 48,356.47
  4. Step 4: Simplify right side
    68,341.22x = 4,953,091,325.82
  5. Step 5: Solve for x
    x = 4,953,091,325.82/68,341.22
  6. Step 6: Final answer
    x = 72,475.90

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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.