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Finding the Fourth Proportional to 443,911.71, 665,933.87 and 163,407.63

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Solution

The fourth proportional to 443,911.71, 665,933.87 and 163,407.63 is: 245,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,911.71 : 665,933.87 = 163,407.63 : x
  2. Step 2: Convert to fraction form
    443,911.71/665,933.87 = 163,407.63/x
  3. Step 3: Cross multiply
    443,911.71x = 665,933.87 × 163,407.63
  4. Step 4: Simplify right side
    443,911.71x = 108,818,674,616.39
  5. Step 5: Solve for x
    x = 108,818,674,616.39/443,911.71
  6. Step 6: Final answer
    x = 245,135.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.