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Finding the Fourth Proportional to 291,670.20, 437,246.10 and 191,878.20

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Solution

The fourth proportional to 291,670.20, 437,246.10 and 191,878.20 is: 287,646.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,670.20 : 437,246.10 = 191,878.20 : x
  2. Step 2: Convert to fraction form
    291,670.20/437,246.10 = 191,878.20/x
  3. Step 3: Cross multiply
    291,670.20x = 437,246.10 × 191,878.20
  4. Step 4: Simplify right side
    291,670.20x = 83,897,994,625.02
  5. Step 5: Solve for x
    x = 83,897,994,625.02/291,670.20
  6. Step 6: Final answer
    x = 287,646.78

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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.