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Finding the Fourth Proportional to 520,995.97, 781,485.45 and 166,005.19

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Solution

The fourth proportional to 520,995.97, 781,485.45 and 166,005.19 is: 249,005.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,995.97 : 781,485.45 = 166,005.19 : x
  2. Step 2: Convert to fraction form
    520,995.97/781,485.45 = 166,005.19/x
  3. Step 3: Cross multiply
    520,995.97x = 781,485.45 × 166,005.19
  4. Step 4: Simplify right side
    520,995.97x = 129,730,640,609.49
  5. Step 5: Solve for x
    x = 129,730,640,609.49/520,995.97
  6. Step 6: Final answer
    x = 249,005.08

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.