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Finding the Fourth Proportional to 71,030.58, 106,527.42 and 21,098.94

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Solution

The fourth proportional to 71,030.58, 106,527.42 and 21,098.94 is: 31,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,030.58 : 106,527.42 = 21,098.94 : x
  2. Step 2: Convert to fraction form
    71,030.58/106,527.42 = 21,098.94/x
  3. Step 3: Cross multiply
    71,030.58x = 106,527.42 × 21,098.94
  4. Step 4: Simplify right side
    71,030.58x = 2,247,615,642.93
  5. Step 5: Solve for x
    x = 2,247,615,642.93/71,030.58
  6. Step 6: Final answer
    x = 31,642.93

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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.