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Finding the Fourth Proportional to 264,917.80, 397,376.70 and 260,543.80

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Solution

The fourth proportional to 264,917.80, 397,376.70 and 260,543.80 is: 390,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,917.80 : 397,376.70 = 260,543.80 : x
  2. Step 2: Convert to fraction form
    264,917.80/397,376.70 = 260,543.80/x
  3. Step 3: Cross multiply
    264,917.80x = 397,376.70 × 260,543.80
  4. Step 4: Simplify right side
    264,917.80x = 103,534,035,449.46
  5. Step 5: Solve for x
    x = 103,534,035,449.46/264,917.80
  6. Step 6: Final answer
    x = 390,815.70

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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.