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Finding the Fourth Proportional to 5,678.51, 7,836.53 and 3,553.36

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Solution

The fourth proportional to 5,678.51, 7,836.53 and 3,553.36 is: 4,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.51 : 7,836.53 = 3,553.36 : x
  2. Step 2: Convert to fraction form
    5,678.51/7,836.53 = 3,553.36/x
  3. Step 3: Cross multiply
    5,678.51x = 7,836.53 × 3,553.36
  4. Step 4: Simplify right side
    5,678.51x = 27,845,955.29
  5. Step 5: Solve for x
    x = 27,845,955.29/5,678.51
  6. Step 6: Final answer
    x = 4,903.74

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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.