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Finding the Fourth Proportional to 519,081.40, 778,476.30 and 164,204.20

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Solution

The fourth proportional to 519,081.40, 778,476.30 and 164,204.20 is: 246,260.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,081.40 : 778,476.30 = 164,204.20 : x
  2. Step 2: Convert to fraction form
    519,081.40/778,476.30 = 164,204.20/x
  3. Step 3: Cross multiply
    519,081.40x = 778,476.30 × 164,204.20
  4. Step 4: Simplify right side
    519,081.40x = 127,829,078,060.46
  5. Step 5: Solve for x
    x = 127,829,078,060.46/519,081.40
  6. Step 6: Final answer
    x = 246,260.18

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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.