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Finding the Fourth Proportional to 678,803.68, 936,123.24 and 461,338.12

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Solution

The fourth proportional to 678,803.68, 936,123.24 and 461,338.12 is: 636,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,803.68 : 936,123.24 = 461,338.12 : x
  2. Step 2: Convert to fraction form
    678,803.68/936,123.24 = 461,338.12/x
  3. Step 3: Cross multiply
    678,803.68x = 936,123.24 × 461,338.12
  4. Step 4: Simplify right side
    678,803.68x = 431,869,335,629.91
  5. Step 5: Solve for x
    x = 431,869,335,629.91/678,803.68
  6. Step 6: Final answer
    x = 636,221.26

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Double scale
Find fourth proportional to 678,804.68, 936,124.62 and 461,339.12
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.