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Finding the Fourth Proportional to 714,317.99, 985,727.96 and 392,033.57

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Solution

The fourth proportional to 714,317.99, 985,727.96 and 392,033.57 is: 540,989.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,317.99 : 985,727.96 = 392,033.57 : x
  2. Step 2: Convert to fraction form
    714,317.99/985,727.96 = 392,033.57/x
  3. Step 3: Cross multiply
    714,317.99x = 985,727.96 × 392,033.57
  4. Step 4: Simplify right side
    714,317.99x = 386,438,444,318.81
  5. Step 5: Solve for x
    x = 386,438,444,318.81/714,317.99
  6. Step 6: Final answer
    x = 540,989.38

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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.