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Finding the Fourth Proportional to 85,692.68, 128,537.64 and 23,363.18

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Solution

The fourth proportional to 85,692.68, 128,537.64 and 23,363.18 is: 35,044.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,692.68 : 128,537.64 = 23,363.18 : x
  2. Step 2: Convert to fraction form
    85,692.68/128,537.64 = 23,363.18/x
  3. Step 3: Cross multiply
    85,692.68x = 128,537.64 × 23,363.18
  4. Step 4: Simplify right side
    85,692.68x = 3,003,047,698.75
  5. Step 5: Solve for x
    x = 3,003,047,698.75/85,692.68
  6. Step 6: Final answer
    x = 35,044.39

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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.