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Finding the Fourth Proportional to 570,942.69, 787,843.49 and 316,246.29

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Solution

The fourth proportional to 570,942.69, 787,843.49 and 316,246.29 is: 436,388.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,942.69 : 787,843.49 = 316,246.29 : x
  2. Step 2: Convert to fraction form
    570,942.69/787,843.49 = 316,246.29/x
  3. Step 3: Cross multiply
    570,942.69x = 787,843.49 × 316,246.29
  4. Step 4: Simplify right side
    570,942.69x = 249,152,580,813.15
  5. Step 5: Solve for x
    x = 249,152,580,813.15/570,942.69
  6. Step 6: Final answer
    x = 436,388.07

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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.