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Finding the Fourth Proportional to 47,316.15, 70,851.11 and 45,913.70

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Solution

The fourth proportional to 47,316.15, 70,851.11 and 45,913.70 is: 68,751.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,316.15 : 70,851.11 = 45,913.70 : x
  2. Step 2: Convert to fraction form
    47,316.15/70,851.11 = 45,913.70/x
  3. Step 3: Cross multiply
    47,316.15x = 70,851.11 × 45,913.70
  4. Step 4: Simplify right side
    47,316.15x = 3,253,036,556.77
  5. Step 5: Solve for x
    x = 3,253,036,556.77/47,316.15
  6. Step 6: Final answer
    x = 68,751.08

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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.