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Finding the Fourth Proportional to 461,990.40, 692,467.20 and 262,406.40

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Solution

The fourth proportional to 461,990.40, 692,467.20 and 262,406.40 is: 393,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,990.40 : 692,467.20 = 262,406.40 : x
  2. Step 2: Convert to fraction form
    461,990.40/692,467.20 = 262,406.40/x
  3. Step 3: Cross multiply
    461,990.40x = 692,467.20 × 262,406.40
  4. Step 4: Simplify right side
    461,990.40x = 181,707,825,070.08
  5. Step 5: Solve for x
    x = 181,707,825,070.08/461,990.40
  6. Step 6: Final answer
    x = 393,315.15

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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.