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Finding the Fourth Proportional to 611,962.91, 843,749.46 and 407,565.71

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Solution

The fourth proportional to 611,962.91, 843,749.46 and 407,565.71 is: 561,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,962.91 : 843,749.46 = 407,565.71 : x
  2. Step 2: Convert to fraction form
    611,962.91/843,749.46 = 407,565.71/x
  3. Step 3: Cross multiply
    611,962.91x = 843,749.46 × 407,565.71
  4. Step 4: Simplify right side
    611,962.91x = 343,883,347,727.02
  5. Step 5: Solve for x
    x = 343,883,347,727.02/611,962.91
  6. Step 6: Final answer
    x = 561,934.95

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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.