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Finding the Fourth Proportional to 291,878.10, 437,817.15 and 186,902.10

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Solution

The fourth proportional to 291,878.10, 437,817.15 and 186,902.10 is: 280,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,878.10 : 437,817.15 = 186,902.10 : x
  2. Step 2: Convert to fraction form
    291,878.10/437,817.15 = 186,902.10/x
  3. Step 3: Cross multiply
    291,878.10x = 437,817.15 × 186,902.10
  4. Step 4: Simplify right side
    291,878.10x = 81,828,944,751.02
  5. Step 5: Solve for x
    x = 81,828,944,751.02/291,878.10
  6. Step 6: Final answer
    x = 280,353.15

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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.