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Finding the Fourth Proportional to 70,402.54, 105,903.48 and 63,818.44

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Solution

The fourth proportional to 70,402.54, 105,903.48 and 63,818.44 is: 95,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,402.54 : 105,903.48 = 63,818.44 : x
  2. Step 2: Convert to fraction form
    70,402.54/105,903.48 = 63,818.44/x
  3. Step 3: Cross multiply
    70,402.54x = 105,903.48 × 63,818.44
  4. Step 4: Simplify right side
    70,402.54x = 6,758,594,884.17
  5. Step 5: Solve for x
    x = 6,758,594,884.17/70,402.54
  6. Step 6: Final answer
    x = 95,999.30

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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.