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Finding the Fourth Proportional to 527,711.55, 728,244.53 and 285,994.11

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Solution

The fourth proportional to 527,711.55, 728,244.53 and 285,994.11 is: 394,673.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,711.55 : 728,244.53 = 285,994.11 : x
  2. Step 2: Convert to fraction form
    527,711.55/728,244.53 = 285,994.11/x
  3. Step 3: Cross multiply
    527,711.55x = 728,244.53 × 285,994.11
  4. Step 4: Simplify right side
    527,711.55x = 208,273,646,219.72
  5. Step 5: Solve for x
    x = 208,273,646,219.72/527,711.55
  6. Step 6: Final answer
    x = 394,673.28

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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.