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Finding the Fourth Proportional to 15,045.53, 20,762.58 and 8,331.02

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Solution

The fourth proportional to 15,045.53, 20,762.58 and 8,331.02 is: 11,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.53 : 20,762.58 = 8,331.02 : x
  2. Step 2: Convert to fraction form
    15,045.53/20,762.58 = 8,331.02/x
  3. Step 3: Cross multiply
    15,045.53x = 20,762.58 × 8,331.02
  4. Step 4: Simplify right side
    15,045.53x = 172,973,445.32
  5. Step 5: Solve for x
    x = 172,973,445.32/15,045.53
  6. Step 6: Final answer
    x = 11,496.66

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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.