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Finding the Fourth Proportional to 575,711.20, 863,558.70 and 260,167.60

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Solution

The fourth proportional to 575,711.20, 863,558.70 and 260,167.60 is: 390,247.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,711.20 : 863,558.70 = 260,167.60 : x
  2. Step 2: Convert to fraction form
    575,711.20/863,558.70 = 260,167.60/x
  3. Step 3: Cross multiply
    575,711.20x = 863,558.70 × 260,167.60
  4. Step 4: Simplify right side
    575,711.20x = 224,669,994,438.12
  5. Step 5: Solve for x
    x = 224,669,994,438.12/575,711.20
  6. Step 6: Final answer
    x = 390,247.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.