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Finding the Fourth Proportional to 723,264.59, 998,136.78 and 400,954.25

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Solution

The fourth proportional to 723,264.59, 998,136.78 and 400,954.25 is: 553,334.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,264.59 : 998,136.78 = 400,954.25 : x
  2. Step 2: Convert to fraction form
    723,264.59/998,136.78 = 400,954.25/x
  3. Step 3: Cross multiply
    723,264.59x = 998,136.78 × 400,954.25
  4. Step 4: Simplify right side
    723,264.59x = 400,207,185,014.08
  5. Step 5: Solve for x
    x = 400,207,185,014.08/723,264.59
  6. Step 6: Final answer
    x = 553,334.41

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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.