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Finding the Fourth Proportional to 93,430.67, 139,792.28 and 57,278.54

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Solution

The fourth proportional to 93,430.67, 139,792.28 and 57,278.54 is: 85,700.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,430.67 : 139,792.28 = 57,278.54 : x
  2. Step 2: Convert to fraction form
    93,430.67/139,792.28 = 57,278.54/x
  3. Step 3: Cross multiply
    93,430.67x = 139,792.28 × 57,278.54
  4. Step 4: Simplify right side
    93,430.67x = 8,007,096,716.32
  5. Step 5: Solve for x
    x = 8,007,096,716.32/93,430.67
  6. Step 6: Final answer
    x = 85,700.95

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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.