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Finding the Fourth Proportional to 654,687.36, 903,505.59 and 436,519.53

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Solution

The fourth proportional to 654,687.36, 903,505.59 and 436,519.53 is: 602,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,687.36 : 903,505.59 = 436,519.53 : x
  2. Step 2: Convert to fraction form
    654,687.36/903,505.59 = 436,519.53/x
  3. Step 3: Cross multiply
    654,687.36x = 903,505.59 × 436,519.53
  4. Step 4: Simplify right side
    654,687.36x = 394,397,835,499.17
  5. Step 5: Solve for x
    x = 394,397,835,499.17/654,687.36
  6. Step 6: Final answer
    x = 602,421.64

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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.