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Finding the Fourth Proportional to 74,820.62, 111,985.14 and 56,954.84

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Solution

The fourth proportional to 74,820.62, 111,985.14 and 56,954.84 is: 85,245.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,820.62 : 111,985.14 = 56,954.84 : x
  2. Step 2: Convert to fraction form
    74,820.62/111,985.14 = 56,954.84/x
  3. Step 3: Cross multiply
    74,820.62x = 111,985.14 × 56,954.84
  4. Step 4: Simplify right side
    74,820.62x = 6,378,095,731.08
  5. Step 5: Solve for x
    x = 6,378,095,731.08/74,820.62
  6. Step 6: Final answer
    x = 85,245.16

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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.