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Finding the Fourth Proportional to 545,676.75, 753,033.92 and 319,322.25

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Solution

The fourth proportional to 545,676.75, 753,033.92 and 319,322.25 is: 440,664.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,676.75 : 753,033.92 = 319,322.25 : x
  2. Step 2: Convert to fraction form
    545,676.75/753,033.92 = 319,322.25/x
  3. Step 3: Cross multiply
    545,676.75x = 753,033.92 × 319,322.25
  4. Step 4: Simplify right side
    545,676.75x = 240,460,484,064.11
  5. Step 5: Solve for x
    x = 240,460,484,064.11/545,676.75
  6. Step 6: Final answer
    x = 440,664.71

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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.