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Finding the Fourth Proportional to 57,075.40, 85,683.30 and 36,015.40

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Solution

The fourth proportional to 57,075.40, 85,683.30 and 36,015.40 is: 54,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,075.40 : 85,683.30 = 36,015.40 : x
  2. Step 2: Convert to fraction form
    57,075.40/85,683.30 = 36,015.40/x
  3. Step 3: Cross multiply
    57,075.40x = 85,683.30 × 36,015.40
  4. Step 4: Simplify right side
    57,075.40x = 3,085,918,322.82
  5. Step 5: Solve for x
    x = 3,085,918,322.82/57,075.40
  6. Step 6: Final answer
    x = 54,067.40

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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.