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Finding the Fourth Proportional to 67,688.76, 101,457.62 and 28,232.76

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Solution

The fourth proportional to 67,688.76, 101,457.62 and 28,232.76 is: 42,317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,688.76 : 101,457.62 = 28,232.76 : x
  2. Step 2: Convert to fraction form
    67,688.76/101,457.62 = 28,232.76/x
  3. Step 3: Cross multiply
    67,688.76x = 101,457.62 × 28,232.76
  4. Step 4: Simplify right side
    67,688.76x = 2,864,428,635.63
  5. Step 5: Solve for x
    x = 2,864,428,635.63/67,688.76
  6. Step 6: Final answer
    x = 42,317.64

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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.