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Finding the Fourth Proportional to 15,695.51, 21,669.93 and 9,733.50

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Solution

The fourth proportional to 15,695.51, 21,669.93 and 9,733.50 is: 13,438.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.51 : 21,669.93 = 9,733.50 : x
  2. Step 2: Convert to fraction form
    15,695.51/21,669.93 = 9,733.50/x
  3. Step 3: Cross multiply
    15,695.51x = 21,669.93 × 9,733.50
  4. Step 4: Simplify right side
    15,695.51x = 210,924,263.66
  5. Step 5: Solve for x
    x = 210,924,263.66/15,695.51
  6. Step 6: Final answer
    x = 13,438.51

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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.