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Finding the Fourth Proportional to 156,143.88, 234,142.90 and 56,290.92

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Solution

The fourth proportional to 156,143.88, 234,142.90 and 56,290.92 is: 84,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,143.88 : 234,142.90 = 56,290.92 : x
  2. Step 2: Convert to fraction form
    156,143.88/234,142.90 = 56,290.92/x
  3. Step 3: Cross multiply
    156,143.88x = 234,142.90 × 56,290.92
  4. Step 4: Simplify right side
    156,143.88x = 13,180,119,252.47
  5. Step 5: Solve for x
    x = 13,180,119,252.47/156,143.88
  6. Step 6: Final answer
    x = 84,410.09

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1.5x scale

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.