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Finding the Fourth Proportional to 291,618.27, 399,808.60 and 286,303.86

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Solution

The fourth proportional to 291,618.27, 399,808.60 and 286,303.86 is: 392,522.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,618.27 : 399,808.60 = 286,303.86 : x
  2. Step 2: Convert to fraction form
    291,618.27/399,808.60 = 286,303.86/x
  3. Step 3: Cross multiply
    291,618.27x = 399,808.60 × 286,303.86
  4. Step 4: Simplify right side
    291,618.27x = 114,466,744,725.44
  5. Step 5: Solve for x
    x = 114,466,744,725.44/291,618.27
  6. Step 6: Final answer
    x = 392,522.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.