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Finding the Fourth Proportional to 77,812.01, 107,379.12 and 47,595.11

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Solution

The fourth proportional to 77,812.01, 107,379.12 and 47,595.11 is: 65,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.01 : 107,379.12 = 47,595.11 : x
  2. Step 2: Convert to fraction form
    77,812.01/107,379.12 = 47,595.11/x
  3. Step 3: Cross multiply
    77,812.01x = 107,379.12 × 47,595.11
  4. Step 4: Simplify right side
    77,812.01x = 5,110,721,023.11
  5. Step 5: Solve for x
    x = 5,110,721,023.11/77,812.01
  6. Step 6: Final answer
    x = 65,680.36

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1.5x scale

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.