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Finding the Fourth Proportional to 267,386.80, 401,080.20 and 265,543.60

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Solution

The fourth proportional to 267,386.80, 401,080.20 and 265,543.60 is: 398,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,386.80 : 401,080.20 = 265,543.60 : x
  2. Step 2: Convert to fraction form
    267,386.80/401,080.20 = 265,543.60/x
  3. Step 3: Cross multiply
    267,386.80x = 401,080.20 × 265,543.60
  4. Step 4: Simplify right side
    267,386.80x = 106,504,280,196.72
  5. Step 5: Solve for x
    x = 106,504,280,196.72/267,386.80
  6. Step 6: Final answer
    x = 398,315.40

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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.