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Finding the Fourth Proportional to 665,823.93, 918,843.72 and 359,906.23

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Solution

The fourth proportional to 665,823.93, 918,843.72 and 359,906.23 is: 496,674.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,823.93 : 918,843.72 = 359,906.23 : x
  2. Step 2: Convert to fraction form
    665,823.93/918,843.72 = 359,906.23/x
  3. Step 3: Cross multiply
    665,823.93x = 918,843.72 × 359,906.23
  4. Step 4: Simplify right side
    665,823.93x = 330,697,579,224.38
  5. Step 5: Solve for x
    x = 330,697,579,224.38/665,823.93
  6. Step 6: Final answer
    x = 496,674.22

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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.