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Finding the Fourth Proportional to 864,998.76, 1,193,668.74 and 483,015.72

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Solution

The fourth proportional to 864,998.76, 1,193,668.74 and 483,015.72 is: 666,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,998.76 : 1,193,668.74 = 483,015.72 : x
  2. Step 2: Convert to fraction form
    864,998.76/1,193,668.74 = 483,015.72/x
  3. Step 3: Cross multiply
    864,998.76x = 1,193,668.74 × 483,015.72
  4. Step 4: Simplify right side
    864,998.76x = 576,560,765,892.59
  5. Step 5: Solve for x
    x = 576,560,765,892.59/864,998.76
  6. Step 6: Final answer
    x = 666,545.19

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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.