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Finding the Fourth Proportional to 723,188.39, 998,009.00 and 417,328.25

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Solution

The fourth proportional to 723,188.39, 998,009.00 and 417,328.25 is: 575,918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,188.39 : 998,009.00 = 417,328.25 : x
  2. Step 2: Convert to fraction form
    723,188.39/998,009.00 = 417,328.25/x
  3. Step 3: Cross multiply
    723,188.39x = 998,009.00 × 417,328.25
  4. Step 4: Simplify right side
    723,188.39x = 416,497,342,377.56
  5. Step 5: Solve for x
    x = 416,497,342,377.56/723,188.39
  6. Step 6: Final answer
    x = 575,918.19

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Half scale
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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.