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Finding the Fourth Proportional to 618,823.91, 853,961.58 and 343,180.16

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Solution

The fourth proportional to 618,823.91, 853,961.58 and 343,180.16 is: 473,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,823.91 : 853,961.58 = 343,180.16 : x
  2. Step 2: Convert to fraction form
    618,823.91/853,961.58 = 343,180.16/x
  3. Step 3: Cross multiply
    618,823.91x = 853,961.58 × 343,180.16
  4. Step 4: Simplify right side
    618,823.91x = 293,062,671,658.25
  5. Step 5: Solve for x
    x = 293,062,671,658.25/618,823.91
  6. Step 6: Final answer
    x = 473,580.07

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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.