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Finding the Fourth Proportional to 719,864, 993,412.40 and 418,077.44

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Solution

The fourth proportional to 719,864, 993,412.40 and 418,077.44 is: 576,946.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,864 : 993,412.40 = 418,077.44 : x
  2. Step 2: Convert to fraction form
    719,864/993,412.40 = 418,077.44/x
  3. Step 3: Cross multiply
    719,864x = 993,412.40 × 418,077.44
  4. Step 4: Simplify right side
    719,864x = 415,323,313,056.26
  5. Step 5: Solve for x
    x = 415,323,313,056.26/719,864
  6. Step 6: Final answer
    x = 576,946.91

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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.