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Finding the Fourth Proportional to 293,206.40, 439,809.60 and 291,456.80

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Solution

The fourth proportional to 293,206.40, 439,809.60 and 291,456.80 is: 437,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,206.40 : 439,809.60 = 291,456.80 : x
  2. Step 2: Convert to fraction form
    293,206.40/439,809.60 = 291,456.80/x
  3. Step 3: Cross multiply
    293,206.40x = 439,809.60 × 291,456.80
  4. Step 4: Simplify right side
    293,206.40x = 128,185,498,625.28
  5. Step 5: Solve for x
    x = 128,185,498,625.28/293,206.40
  6. Step 6: Final answer
    x = 437,185.20

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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.