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Finding the Fourth Proportional to 570,956.11, 787,947.56 and 316,308.31

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Solution

The fourth proportional to 570,956.11, 787,947.56 and 316,308.31 is: 436,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,956.11 : 787,947.56 = 316,308.31 : x
  2. Step 2: Convert to fraction form
    570,956.11/787,947.56 = 316,308.31/x
  3. Step 3: Cross multiply
    570,956.11x = 787,947.56 × 316,308.31
  4. Step 4: Simplify right side
    570,956.11x = 249,234,361,072.22
  5. Step 5: Solve for x
    x = 249,234,361,072.22/570,956.11
  6. Step 6: Final answer
    x = 436,521.05

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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.