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Finding the Fourth Proportional to 70,530.01, 105,812.11 and 40,563.43

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Solution

The fourth proportional to 70,530.01, 105,812.11 and 40,563.43 is: 60,854.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,530.01 : 105,812.11 = 40,563.43 : x
  2. Step 2: Convert to fraction form
    70,530.01/105,812.11 = 40,563.43/x
  3. Step 3: Cross multiply
    70,530.01x = 105,812.11 × 40,563.43
  4. Step 4: Simplify right side
    70,530.01x = 4,292,101,903.31
  5. Step 5: Solve for x
    x = 4,292,101,903.31/70,530.01
  6. Step 6: Final answer
    x = 60,854.98

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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.