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Finding the Fourth Proportional to 35,457.15, 48,939.20 and 22,038.54

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Solution

The fourth proportional to 35,457.15, 48,939.20 and 22,038.54 is: 30,418.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,457.15 : 48,939.20 = 22,038.54 : x
  2. Step 2: Convert to fraction form
    35,457.15/48,939.20 = 22,038.54/x
  3. Step 3: Cross multiply
    35,457.15x = 48,939.20 × 22,038.54
  4. Step 4: Simplify right side
    35,457.15x = 1,078,548,516.77
  5. Step 5: Solve for x
    x = 1,078,548,516.77/35,457.15
  6. Step 6: Final answer
    x = 30,418.36

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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.