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Finding the Fourth Proportional to 7,551.65, 10,421.55 and 4,194.53

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Solution

The fourth proportional to 7,551.65, 10,421.55 and 4,194.53 is: 5,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,551.65 : 10,421.55 = 4,194.53 : x
  2. Step 2: Convert to fraction form
    7,551.65/10,421.55 = 4,194.53/x
  3. Step 3: Cross multiply
    7,551.65x = 10,421.55 × 4,194.53
  4. Step 4: Simplify right side
    7,551.65x = 43,713,431.04
  5. Step 5: Solve for x
    x = 43,713,431.04/7,551.65
  6. Step 6: Final answer
    x = 5,788.59

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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.