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Finding the Fourth Proportional to 554,669.20, 830,254.20 and 397,205.20

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Solution

The fourth proportional to 554,669.20, 830,254.20 and 397,205.20 is: 594,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,669.20 : 830,254.20 = 397,205.20 : x
  2. Step 2: Convert to fraction form
    554,669.20/830,254.20 = 397,205.20/x
  3. Step 3: Cross multiply
    554,669.20x = 830,254.20 × 397,205.20
  4. Step 4: Simplify right side
    554,669.20x = 329,781,285,561.84
  5. Step 5: Solve for x
    x = 329,781,285,561.84/554,669.20
  6. Step 6: Final answer
    x = 594,554.89

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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.