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Finding the Fourth Proportional to 385,576.01, 532,101.47 and 211,161.54

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Solution

The fourth proportional to 385,576.01, 532,101.47 and 211,161.54 is: 291,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,576.01 : 532,101.47 = 211,161.54 : x
  2. Step 2: Convert to fraction form
    385,576.01/532,101.47 = 211,161.54/x
  3. Step 3: Cross multiply
    385,576.01x = 532,101.47 × 211,161.54
  4. Step 4: Simplify right side
    385,576.01x = 112,359,365,841.46
  5. Step 5: Solve for x
    x = 112,359,365,841.46/385,576.01
  6. Step 6: Final answer
    x = 291,406.53

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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.