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Finding the Fourth Proportional to 285,157.50, 393,503.91 and 156,093.42

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Solution

The fourth proportional to 285,157.50, 393,503.91 and 156,093.42 is: 215,401.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,157.50 : 393,503.91 = 156,093.42 : x
  2. Step 2: Convert to fraction form
    285,157.50/393,503.91 = 156,093.42/x
  3. Step 3: Cross multiply
    285,157.50x = 393,503.91 × 156,093.42
  4. Step 4: Simplify right side
    285,157.50x = 61,423,371,095.27
  5. Step 5: Solve for x
    x = 61,423,371,095.27/285,157.50
  6. Step 6: Final answer
    x = 215,401.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.