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Finding the Fourth Proportional to 93,334.20, 139,964.90 and 40,707.80

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Solution

The fourth proportional to 93,334.20, 139,964.90 and 40,707.80 is: 61,045.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,334.20 : 139,964.90 = 40,707.80 : x
  2. Step 2: Convert to fraction form
    93,334.20/139,964.90 = 40,707.80/x
  3. Step 3: Cross multiply
    93,334.20x = 139,964.90 × 40,707.80
  4. Step 4: Simplify right side
    93,334.20x = 5,697,663,156.22
  5. Step 5: Solve for x
    x = 5,697,663,156.22/93,334.20
  6. Step 6: Final answer
    x = 61,045.82

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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.