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Finding the Fourth Proportional to 64,424.49, 96,639.77 and 53,158.93

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Solution

The fourth proportional to 64,424.49, 96,639.77 and 53,158.93 is: 79,740.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,424.49 : 96,639.77 = 53,158.93 : x
  2. Step 2: Convert to fraction form
    64,424.49/96,639.77 = 53,158.93/x
  3. Step 3: Cross multiply
    64,424.49x = 96,639.77 × 53,158.93
  4. Step 4: Simplify right side
    64,424.49x = 5,137,266,768.65
  5. Step 5: Solve for x
    x = 5,137,266,768.65/64,424.49
  6. Step 6: Final answer
    x = 79,740.90

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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.