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Finding the Fourth Proportional to 664,681.01, 996,922.96 and 215,441.51

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Solution

The fourth proportional to 664,681.01, 996,922.96 and 215,441.51 is: 323,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,681.01 : 996,922.96 = 215,441.51 : x
  2. Step 2: Convert to fraction form
    664,681.01/996,922.96 = 215,441.51/x
  3. Step 3: Cross multiply
    664,681.01x = 996,922.96 × 215,441.51
  4. Step 4: Simplify right side
    664,681.01x = 214,778,587,856.07
  5. Step 5: Solve for x
    x = 214,778,587,856.07/664,681.01
  6. Step 6: Final answer
    x = 323,130.32

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