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Finding the Fourth Proportional to 35,908.40, 53,862.60 and 18,412.40

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Solution

The fourth proportional to 35,908.40, 53,862.60 and 18,412.40 is: 27,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,908.40 : 53,862.60 = 18,412.40 : x
  2. Step 2: Convert to fraction form
    35,908.40/53,862.60 = 18,412.40/x
  3. Step 3: Cross multiply
    35,908.40x = 53,862.60 × 18,412.40
  4. Step 4: Simplify right side
    35,908.40x = 991,739,736.24
  5. Step 5: Solve for x
    x = 991,739,736.24/35,908.40
  6. Step 6: Final answer
    x = 27,618.60

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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.