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Finding the Fourth Proportional to 15,925.45, 21,973.92 and 9,208.63

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Solution

The fourth proportional to 15,925.45, 21,973.92 and 9,208.63 is: 12,706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,925.45 : 21,973.92 = 9,208.63 : x
  2. Step 2: Convert to fraction form
    15,925.45/21,973.92 = 9,208.63/x
  3. Step 3: Cross multiply
    15,925.45x = 21,973.92 × 9,208.63
  4. Step 4: Simplify right side
    15,925.45x = 202,349,698.93
  5. Step 5: Solve for x
    x = 202,349,698.93/15,925.45
  6. Step 6: Final answer
    x = 12,706.06

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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.