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Finding the Fourth Proportional to 12,355.80, 17,052.49 and 7,051.51

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Solution

The fourth proportional to 12,355.80, 17,052.49 and 7,051.51 is: 9,731.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.80 : 17,052.49 = 7,051.51 : x
  2. Step 2: Convert to fraction form
    12,355.80/17,052.49 = 7,051.51/x
  3. Step 3: Cross multiply
    12,355.80x = 17,052.49 × 7,051.51
  4. Step 4: Simplify right side
    12,355.80x = 120,245,803.76
  5. Step 5: Solve for x
    x = 120,245,803.76/12,355.80
  6. Step 6: Final answer
    x = 9,731.93

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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.