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Finding the Fourth Proportional to 52,896.76, 72,985.08 and 47,995.72

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Solution

The fourth proportional to 52,896.76, 72,985.08 and 47,995.72 is: 66,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,896.76 : 72,985.08 = 47,995.72 : x
  2. Step 2: Convert to fraction form
    52,896.76/72,985.08 = 47,995.72/x
  3. Step 3: Cross multiply
    52,896.76x = 72,985.08 × 47,995.72
  4. Step 4: Simplify right side
    52,896.76x = 3,502,971,463.86
  5. Step 5: Solve for x
    x = 3,502,971,463.86/52,896.76
  6. Step 6: Final answer
    x = 66,222.80

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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.