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Finding the Fourth Proportional to 18,368.01, 25,347.74 and 9,984.51

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Solution

The fourth proportional to 18,368.01, 25,347.74 and 9,984.51 is: 13,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.01 : 25,347.74 = 9,984.51 : x
  2. Step 2: Convert to fraction form
    18,368.01/25,347.74 = 9,984.51/x
  3. Step 3: Cross multiply
    18,368.01x = 25,347.74 × 9,984.51
  4. Step 4: Simplify right side
    18,368.01x = 253,084,713.58
  5. Step 5: Solve for x
    x = 253,084,713.58/18,368.01
  6. Step 6: Final answer
    x = 13,778.56

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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.