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Finding the Fourth Proportional to 70,883.76, 97,818.50 and 39,053.80

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Solution

The fourth proportional to 70,883.76, 97,818.50 and 39,053.80 is: 53,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,883.76 : 97,818.50 = 39,053.80 : x
  2. Step 2: Convert to fraction form
    70,883.76/97,818.50 = 39,053.80/x
  3. Step 3: Cross multiply
    70,883.76x = 97,818.50 × 39,053.80
  4. Step 4: Simplify right side
    70,883.76x = 3,820,184,135.30
  5. Step 5: Solve for x
    x = 3,820,184,135.30/70,883.76
  6. Step 6: Final answer
    x = 53,893.64

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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.