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Finding the Fourth Proportional to 64,724.78, 89,347.83 and 43,516.35

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Solution

The fourth proportional to 64,724.78, 89,347.83 and 43,516.35 is: 60,071.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,724.78 : 89,347.83 = 43,516.35 : x
  2. Step 2: Convert to fraction form
    64,724.78/89,347.83 = 43,516.35/x
  3. Step 3: Cross multiply
    64,724.78x = 89,347.83 × 43,516.35
  4. Step 4: Simplify right side
    64,724.78x = 3,888,091,206.24
  5. Step 5: Solve for x
    x = 3,888,091,206.24/64,724.78
  6. Step 6: Final answer
    x = 60,071.14

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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.