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Finding the Fourth Proportional to 668,926.71, 923,119.47 and 382,452.80

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Solution

The fourth proportional to 668,926.71, 923,119.47 and 382,452.80 is: 527,785.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,926.71 : 923,119.47 = 382,452.80 : x
  2. Step 2: Convert to fraction form
    668,926.71/923,119.47 = 382,452.80/x
  3. Step 3: Cross multiply
    668,926.71x = 923,119.47 × 382,452.80
  4. Step 4: Simplify right side
    668,926.71x = 353,049,621,420.42
  5. Step 5: Solve for x
    x = 353,049,621,420.42/668,926.71
  6. Step 6: Final answer
    x = 527,785.21

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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.