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Finding the Fourth Proportional to 64,392.16, 88,912.56 and 43,189.60

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Solution

The fourth proportional to 64,392.16, 88,912.56 and 43,189.60 is: 59,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,392.16 : 88,912.56 = 43,189.60 : x
  2. Step 2: Convert to fraction form
    64,392.16/88,912.56 = 43,189.60/x
  3. Step 3: Cross multiply
    64,392.16x = 88,912.56 × 43,189.60
  4. Step 4: Simplify right side
    64,392.16x = 3,840,097,901.38
  5. Step 5: Solve for x
    x = 3,840,097,901.38/64,392.16
  6. Step 6: Final answer
    x = 59,636.11

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1.5x scale

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.