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Finding the Fourth Proportional to 265,941.60, 398,913.91 and 66,262.02

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Solution

The fourth proportional to 265,941.60, 398,913.91 and 66,262.02 is: 99,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,941.60 : 398,913.91 = 66,262.02 : x
  2. Step 2: Convert to fraction form
    265,941.60/398,913.91 = 66,262.02/x
  3. Step 3: Cross multiply
    265,941.60x = 398,913.91 × 66,262.02
  4. Step 4: Simplify right side
    265,941.60x = 26,432,840,193.84
  5. Step 5: Solve for x
    x = 26,432,840,193.84/265,941.60
  6. Step 6: Final answer
    x = 99,393.40

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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.