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Finding the Fourth Proportional to 570,662.72, 787,539.31 and 316,013.91

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Solution

The fourth proportional to 570,662.72, 787,539.31 and 316,013.91 is: 436,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,662.72 : 787,539.31 = 316,013.91 : x
  2. Step 2: Convert to fraction form
    570,662.72/787,539.31 = 316,013.91/x
  3. Step 3: Cross multiply
    570,662.72x = 787,539.31 × 316,013.91
  4. Step 4: Simplify right side
    570,662.72x = 248,873,372,888.50
  5. Step 5: Solve for x
    x = 248,873,372,888.50/570,662.72
  6. Step 6: Final answer
    x = 436,112.90

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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.