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Finding the Fourth Proportional to 64,555.54, 89,061.68 and 47,599.92

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Solution

The fourth proportional to 64,555.54, 89,061.68 and 47,599.92 is: 65,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,555.54 : 89,061.68 = 47,599.92 : x
  2. Step 2: Convert to fraction form
    64,555.54/89,061.68 = 47,599.92/x
  3. Step 3: Cross multiply
    64,555.54x = 89,061.68 × 47,599.92
  4. Step 4: Simplify right side
    64,555.54x = 4,239,328,962.07
  5. Step 5: Solve for x
    x = 4,239,328,962.07/64,555.54
  6. Step 6: Final answer
    x = 65,669.49

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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.