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Finding the Fourth Proportional to 462,087.40, 693,131.10 and 262,330.60

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Solution

The fourth proportional to 462,087.40, 693,131.10 and 262,330.60 is: 393,495.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,087.40 : 693,131.10 = 262,330.60 : x
  2. Step 2: Convert to fraction form
    462,087.40/693,131.10 = 262,330.60/x
  3. Step 3: Cross multiply
    462,087.40x = 693,131.10 × 262,330.60
  4. Step 4: Simplify right side
    462,087.40x = 181,829,497,341.66
  5. Step 5: Solve for x
    x = 181,829,497,341.66/462,087.40
  6. Step 6: Final answer
    x = 393,495.90

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Double scale
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Similar ratio
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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.