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Finding the Fourth Proportional to 71,955.08, 107,988.10 and 46,988.36

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Solution

The fourth proportional to 71,955.08, 107,988.10 and 46,988.36 is: 70,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,955.08 : 107,988.10 = 46,988.36 : x
  2. Step 2: Convert to fraction form
    71,955.08/107,988.10 = 46,988.36/x
  3. Step 3: Cross multiply
    71,955.08x = 107,988.10 × 46,988.36
  4. Step 4: Simplify right side
    71,955.08x = 5,074,183,718.52
  5. Step 5: Solve for x
    x = 5,074,183,718.52/71,955.08
  6. Step 6: Final answer
    x = 70,518.77

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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.