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Finding the Fourth Proportional to 621,657.18, 857,855.61 and 366,959.16

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Solution

The fourth proportional to 621,657.18, 857,855.61 and 366,959.16 is: 506,385.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,657.18 : 857,855.61 = 366,959.16 : x
  2. Step 2: Convert to fraction form
    621,657.18/857,855.61 = 366,959.16/x
  3. Step 3: Cross multiply
    621,657.18x = 857,855.61 × 366,959.16
  4. Step 4: Simplify right side
    621,657.18x = 314,797,974,046.89
  5. Step 5: Solve for x
    x = 314,797,974,046.89/621,657.18
  6. Step 6: Final answer
    x = 506,385.17

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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.