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Finding the Fourth Proportional to 531,366.66, 733,276.53 and 289,651.32

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Solution

The fourth proportional to 531,366.66, 733,276.53 and 289,651.32 is: 399,713.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,366.66 : 733,276.53 = 289,651.32 : x
  2. Step 2: Convert to fraction form
    531,366.66/733,276.53 = 289,651.32/x
  3. Step 3: Cross multiply
    531,366.66x = 733,276.53 × 289,651.32
  4. Step 4: Simplify right side
    531,366.66x = 212,394,514,839.52
  5. Step 5: Solve for x
    x = 212,394,514,839.52/531,366.66
  6. Step 6: Final answer
    x = 399,713.66

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.