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Finding the Fourth Proportional to 93,563.64, 129,072.72 and 68,030.40

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Solution

The fourth proportional to 93,563.64, 129,072.72 and 68,030.40 is: 93,849.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,563.64 : 129,072.72 = 68,030.40 : x
  2. Step 2: Convert to fraction form
    93,563.64/129,072.72 = 68,030.40/x
  3. Step 3: Cross multiply
    93,563.64x = 129,072.72 × 68,030.40
  4. Step 4: Simplify right side
    93,563.64x = 8,780,868,770.69
  5. Step 5: Solve for x
    x = 8,780,868,770.69/93,563.64
  6. Step 6: Final answer
    x = 93,849.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.