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Finding the Fourth Proportional to 34,725.70, 47,921.16 and 18,810.11

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Solution

The fourth proportional to 34,725.70, 47,921.16 and 18,810.11 is: 25,957.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,725.70 : 47,921.16 = 18,810.11 : x
  2. Step 2: Convert to fraction form
    34,725.70/47,921.16 = 18,810.11/x
  3. Step 3: Cross multiply
    34,725.70x = 47,921.16 × 18,810.11
  4. Step 4: Simplify right side
    34,725.70x = 901,402,290.93
  5. Step 5: Solve for x
    x = 901,402,290.93/34,725.70
  6. Step 6: Final answer
    x = 25,957.79

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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.