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Finding the Fourth Proportional to 93,281.69, 139,921.90 and 26,721.90

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Solution

The fourth proportional to 93,281.69, 139,921.90 and 26,721.90 is: 40,082.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,281.69 : 139,921.90 = 26,721.90 : x
  2. Step 2: Convert to fraction form
    93,281.69/139,921.90 = 26,721.90/x
  3. Step 3: Cross multiply
    93,281.69x = 139,921.90 × 26,721.90
  4. Step 4: Simplify right side
    93,281.69x = 3,738,978,952.81
  5. Step 5: Solve for x
    x = 3,738,978,952.81/93,281.69
  6. Step 6: Final answer
    x = 40,082.67

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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.