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Finding the Fourth Proportional to 5,673.42, 7,829.88 and 3,155.52

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Solution

The fourth proportional to 5,673.42, 7,829.88 and 3,155.52 is: 4,354.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.42 : 7,829.88 = 3,155.52 : x
  2. Step 2: Convert to fraction form
    5,673.42/7,829.88 = 3,155.52/x
  3. Step 3: Cross multiply
    5,673.42x = 7,829.88 × 3,155.52
  4. Step 4: Simplify right side
    5,673.42x = 24,707,342.94
  5. Step 5: Solve for x
    x = 24,707,342.94/5,673.42
  6. Step 6: Final answer
    x = 4,354.93

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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.