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Finding the Fourth Proportional to 723,686.16, 998,806.47 and 401,500.05

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Solution

The fourth proportional to 723,686.16, 998,806.47 and 401,500.05 is: 554,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,686.16 : 998,806.47 = 401,500.05 : x
  2. Step 2: Convert to fraction form
    723,686.16/998,806.47 = 401,500.05/x
  3. Step 3: Cross multiply
    723,686.16x = 998,806.47 × 401,500.05
  4. Step 4: Simplify right side
    723,686.16x = 401,020,847,645.32
  5. Step 5: Solve for x
    x = 401,020,847,645.32/723,686.16
  6. Step 6: Final answer
    x = 554,136.41

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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.