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Finding the Fourth Proportional to 63,009.75, 86,953.86 and 34,715.64

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Solution

The fourth proportional to 63,009.75, 86,953.86 and 34,715.64 is: 47,907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,009.75 : 86,953.86 = 34,715.64 : x
  2. Step 2: Convert to fraction form
    63,009.75/86,953.86 = 34,715.64/x
  3. Step 3: Cross multiply
    63,009.75x = 86,953.86 × 34,715.64
  4. Step 4: Simplify right side
    63,009.75x = 3,018,658,900.37
  5. Step 5: Solve for x
    x = 3,018,658,900.37/63,009.75
  6. Step 6: Final answer
    x = 47,907.81

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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.