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Finding the Fourth Proportional to 669,649.64, 923,581.80 and 440,442.23

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Solution

The fourth proportional to 669,649.64, 923,581.80 and 440,442.23 is: 607,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,649.64 : 923,581.80 = 440,442.23 : x
  2. Step 2: Convert to fraction form
    669,649.64/923,581.80 = 440,442.23/x
  3. Step 3: Cross multiply
    669,649.64x = 923,581.80 × 440,442.23
  4. Step 4: Simplify right side
    669,649.64x = 406,784,427,579.41
  5. Step 5: Solve for x
    x = 406,784,427,579.41/669,649.64
  6. Step 6: Final answer
    x = 607,458.59

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Double scale
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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.