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Finding the Fourth Proportional to 520,100.20, 717,747.78 and 293,703.40

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Solution

The fourth proportional to 520,100.20, 717,747.78 and 293,703.40 is: 405,316.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,100.20 : 717,747.78 = 293,703.40 : x
  2. Step 2: Convert to fraction form
    520,100.20/717,747.78 = 293,703.40/x
  3. Step 3: Cross multiply
    520,100.20x = 717,747.78 × 293,703.40
  4. Step 4: Simplify right side
    520,100.20x = 210,804,963,328.45
  5. Step 5: Solve for x
    x = 210,804,963,328.45/520,100.20
  6. Step 6: Final answer
    x = 405,316.06

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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.