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Finding the Fourth Proportional to 316,602.20, 476,069.70 and 265,280.60

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Solution

The fourth proportional to 316,602.20, 476,069.70 and 265,280.60 is: 398,898.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,602.20 : 476,069.70 = 265,280.60 : x
  2. Step 2: Convert to fraction form
    316,602.20/476,069.70 = 265,280.60/x
  3. Step 3: Cross multiply
    316,602.20x = 476,069.70 × 265,280.60
  4. Step 4: Simplify right side
    316,602.20x = 126,292,055,657.82
  5. Step 5: Solve for x
    x = 126,292,055,657.82/316,602.20
  6. Step 6: Final answer
    x = 398,898.23

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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.