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Finding the Fourth Proportional to 543,145.60, 814,948.80 and 262,518.40

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Solution

The fourth proportional to 543,145.60, 814,948.80 and 262,518.40 is: 393,888.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,145.60 : 814,948.80 = 262,518.40 : x
  2. Step 2: Convert to fraction form
    543,145.60/814,948.80 = 262,518.40/x
  3. Step 3: Cross multiply
    543,145.60x = 814,948.80 × 262,518.40
  4. Step 4: Simplify right side
    543,145.60x = 213,939,055,057.92
  5. Step 5: Solve for x
    x = 213,939,055,057.92/543,145.60
  6. Step 6: Final answer
    x = 393,888.96

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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.