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Finding the Fourth Proportional to 385,777.76, 532,354.79 and 213,684.11

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Solution

The fourth proportional to 385,777.76, 532,354.79 and 213,684.11 is: 294,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,777.76 : 532,354.79 = 213,684.11 : x
  2. Step 2: Convert to fraction form
    385,777.76/532,354.79 = 213,684.11/x
  3. Step 3: Cross multiply
    385,777.76x = 532,354.79 × 213,684.11
  4. Step 4: Simplify right side
    385,777.76x = 113,755,755,775.19
  5. Step 5: Solve for x
    x = 113,755,755,775.19/385,777.76
  6. Step 6: Final answer
    x = 294,873.80

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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.