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Finding the Fourth Proportional to 28,482.48, 42,732.86 and 13,692.48

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Solution

The fourth proportional to 28,482.48, 42,732.86 and 13,692.48 is: 20,543.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.48 : 42,732.86 = 13,692.48 : x
  2. Step 2: Convert to fraction form
    28,482.48/42,732.86 = 13,692.48/x
  3. Step 3: Cross multiply
    28,482.48x = 42,732.86 × 13,692.48
  4. Step 4: Simplify right side
    28,482.48x = 585,118,830.89
  5. Step 5: Solve for x
    x = 585,118,830.89/28,482.48
  6. Step 6: Final answer
    x = 20,543.11

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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.