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Finding the Fourth Proportional to 63,009.12, 86,952.64 and 34,328.64

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Solution

The fourth proportional to 63,009.12, 86,952.64 and 34,328.64 is: 47,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,009.12 : 86,952.64 = 34,328.64 : x
  2. Step 2: Convert to fraction form
    63,009.12/86,952.64 = 34,328.64/x
  3. Step 3: Cross multiply
    63,009.12x = 86,952.64 × 34,328.64
  4. Step 4: Simplify right side
    63,009.12x = 2,984,965,875.61
  5. Step 5: Solve for x
    x = 2,984,965,875.61/63,009.12
  6. Step 6: Final answer
    x = 47,373.55

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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.