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Finding the Fourth Proportional to 570,612.22, 787,435.24 and 315,957.94

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Solution

The fourth proportional to 570,612.22, 787,435.24 and 315,957.94 is: 436,016.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,612.22 : 787,435.24 = 315,957.94 : x
  2. Step 2: Convert to fraction form
    570,612.22/787,435.24 = 315,957.94/x
  3. Step 3: Cross multiply
    570,612.22x = 787,435.24 × 315,957.94
  4. Step 4: Simplify right side
    570,612.22x = 248,796,416,313.81
  5. Step 5: Solve for x
    x = 248,796,416,313.81/570,612.22
  6. Step 6: Final answer
    x = 436,016.63

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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.