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Finding the Fourth Proportional to 613,911.71, 920,169.27 and 373,495.65

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Solution

The fourth proportional to 613,911.71, 920,169.27 and 373,495.65 is: 559,818.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,911.71 : 920,169.27 = 373,495.65 : x
  2. Step 2: Convert to fraction form
    613,911.71/920,169.27 = 373,495.65/x
  3. Step 3: Cross multiply
    613,911.71x = 920,169.27 × 373,495.65
  4. Step 4: Simplify right side
    613,911.71x = 343,679,219,608.68
  5. Step 5: Solve for x
    x = 343,679,219,608.68/613,911.71
  6. Step 6: Final answer
    x = 559,818.64

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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.