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Finding the Fourth Proportional to 418,840.34, 623,523.32 and 416,349.23

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Solution

The fourth proportional to 418,840.34, 623,523.32 and 416,349.23 is: 619,814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,840.34 : 623,523.32 = 416,349.23 : x
  2. Step 2: Convert to fraction form
    418,840.34/623,523.32 = 416,349.23/x
  3. Step 3: Cross multiply
    418,840.34x = 623,523.32 × 416,349.23
  4. Step 4: Simplify right side
    418,840.34x = 259,603,448,969.68
  5. Step 5: Solve for x
    x = 259,603,448,969.68/418,840.34
  6. Step 6: Final answer
    x = 619,814.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.