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Finding the Fourth Proportional to 13,573.30, 18,725.88 and 7,907.08

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Solution

The fourth proportional to 13,573.30, 18,725.88 and 7,907.08 is: 10,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,573.30 : 18,725.88 = 7,907.08 : x
  2. Step 2: Convert to fraction form
    13,573.30/18,725.88 = 7,907.08/x
  3. Step 3: Cross multiply
    13,573.30x = 18,725.88 × 7,907.08
  4. Step 4: Simplify right side
    13,573.30x = 148,067,031.23
  5. Step 5: Solve for x
    x = 148,067,031.23/13,573.30
  6. Step 6: Final answer
    x = 10,908.70

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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.