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Finding the Fourth Proportional to 35,857.60, 53,786.40 and 19,268.80

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Solution

The fourth proportional to 35,857.60, 53,786.40 and 19,268.80 is: 28,903.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,857.60 : 53,786.40 = 19,268.80 : x
  2. Step 2: Convert to fraction form
    35,857.60/53,786.40 = 19,268.80/x
  3. Step 3: Cross multiply
    35,857.60x = 53,786.40 × 19,268.80
  4. Step 4: Simplify right side
    35,857.60x = 1,036,399,384.32
  5. Step 5: Solve for x
    x = 1,036,399,384.32/35,857.60
  6. Step 6: Final answer
    x = 28,903.20

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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.