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Finding the Fourth Proportional to 586,917.82, 810,706.36 and 485,353.54

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Solution

The fourth proportional to 586,917.82, 810,706.36 and 485,353.54 is: 670,416.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,917.82 : 810,706.36 = 485,353.54 : x
  2. Step 2: Convert to fraction form
    586,917.82/810,706.36 = 485,353.54/x
  3. Step 3: Cross multiply
    586,917.82x = 810,706.36 × 485,353.54
  4. Step 4: Simplify right side
    586,917.82x = 393,479,201,726.51
  5. Step 5: Solve for x
    x = 393,479,201,726.51/586,917.82
  6. Step 6: Final answer
    x = 670,416.18

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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.