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Finding the Fourth Proportional to 93,112.80, 139,558.08 and 64,879.92

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Solution

The fourth proportional to 93,112.80, 139,558.08 and 64,879.92 is: 97,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,112.80 : 139,558.08 = 64,879.92 : x
  2. Step 2: Convert to fraction form
    93,112.80/139,558.08 = 64,879.92/x
  3. Step 3: Cross multiply
    93,112.80x = 139,558.08 × 64,879.92
  4. Step 4: Simplify right side
    93,112.80x = 9,054,517,065.75
  5. Step 5: Solve for x
    x = 9,054,517,065.75/93,112.80
  6. Step 6: Final answer
    x = 97,242.45

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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.