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Finding the Fourth Proportional to 613,923.80, 920,885.70 and 613,923.80

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Solution

The fourth proportional to 613,923.80, 920,885.70 and 613,923.80 is: 920,885.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,923.80 : 920,885.70 = 613,923.80 : x
  2. Step 2: Convert to fraction form
    613,923.80/920,885.70 = 613,923.80/x
  3. Step 3: Cross multiply
    613,923.80x = 920,885.70 × 613,923.80
  4. Step 4: Simplify right side
    613,923.80x = 565,353,648,309.66
  5. Step 5: Solve for x
    x = 565,353,648,309.66/613,923.80
  6. Step 6: Final answer
    x = 920,885.70

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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.