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Finding the Fourth Proportional to 262,143.18, 393,114.60 and 93,631.86

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Solution

The fourth proportional to 262,143.18, 393,114.60 and 93,631.86 is: 140,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,143.18 : 393,114.60 = 93,631.86 : x
  2. Step 2: Convert to fraction form
    262,143.18/393,114.60 = 93,631.86/x
  3. Step 3: Cross multiply
    262,143.18x = 393,114.60 × 93,631.86
  4. Step 4: Simplify right side
    262,143.18x = 36,808,051,191.16
  5. Step 5: Solve for x
    x = 36,808,051,191.16/262,143.18
  6. Step 6: Final answer
    x = 140,412.01

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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.