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Finding the Fourth Proportional to 405,715.68, 605,601 and 357,833.52

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Solution

The fourth proportional to 405,715.68, 605,601 and 357,833.52 is: 534,128.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,715.68 : 605,601 = 357,833.52 : x
  2. Step 2: Convert to fraction form
    405,715.68/605,601 = 357,833.52/x
  3. Step 3: Cross multiply
    405,715.68x = 605,601 × 357,833.52
  4. Step 4: Simplify right side
    405,715.68x = 216,704,337,545.52
  5. Step 5: Solve for x
    x = 216,704,337,545.52/405,715.68
  6. Step 6: Final answer
    x = 534,128.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.