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Finding the Fourth Proportional to 29,651.48, 40,904.90 and 18,316.90

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Solution

The fourth proportional to 29,651.48, 40,904.90 and 18,316.90 is: 25,268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,651.48 : 40,904.90 = 18,316.90 : x
  2. Step 2: Convert to fraction form
    29,651.48/40,904.90 = 18,316.90/x
  3. Step 3: Cross multiply
    29,651.48x = 40,904.90 × 18,316.90
  4. Step 4: Simplify right side
    29,651.48x = 749,250,962.81
  5. Step 5: Solve for x
    x = 749,250,962.81/29,651.48
  6. Step 6: Final answer
    x = 25,268.59

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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.