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Finding the Fourth Proportional to 5,655.42, 8,490.45 and 4,357.74

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Solution

The fourth proportional to 5,655.42, 8,490.45 and 4,357.74 is: 6,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,655.42 : 8,490.45 = 4,357.74 : x
  2. Step 2: Convert to fraction form
    5,655.42/8,490.45 = 4,357.74/x
  3. Step 3: Cross multiply
    5,655.42x = 8,490.45 × 4,357.74
  4. Step 4: Simplify right side
    5,655.42x = 36,999,173.58
  5. Step 5: Solve for x
    x = 36,999,173.58/5,655.42
  6. Step 6: Final answer
    x = 6,542.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.