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Finding the Fourth Proportional to 482,792.83, 666,807.07 and 317,957.66

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Solution

The fourth proportional to 482,792.83, 666,807.07 and 317,957.66 is: 439,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,792.83 : 666,807.07 = 317,957.66 : x
  2. Step 2: Convert to fraction form
    482,792.83/666,807.07 = 317,957.66/x
  3. Step 3: Cross multiply
    482,792.83x = 666,807.07 × 317,957.66
  4. Step 4: Simplify right side
    482,792.83x = 212,016,412,741.03
  5. Step 5: Solve for x
    x = 212,016,412,741.03/482,792.83
  6. Step 6: Final answer
    x = 439,145.73

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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.