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Finding the Fourth Proportional to 361,719.41, 499,070.98 and 285,000.66

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Solution

The fourth proportional to 361,719.41, 499,070.98 and 285,000.66 is: 393,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,719.41 : 499,070.98 = 285,000.66 : x
  2. Step 2: Convert to fraction form
    361,719.41/499,070.98 = 285,000.66/x
  3. Step 3: Cross multiply
    361,719.41x = 499,070.98 × 285,000.66
  4. Step 4: Simplify right side
    361,719.41x = 142,235,559,222.02
  5. Step 5: Solve for x
    x = 142,235,559,222.02/361,719.41
  6. Step 6: Final answer
    x = 393,220.70

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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.