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Finding the Fourth Proportional to 639,603.60, 882,655.56 and 349,216.08

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Solution

The fourth proportional to 639,603.60, 882,655.56 and 349,216.08 is: 481,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,603.60 : 882,655.56 = 349,216.08 : x
  2. Step 2: Convert to fraction form
    639,603.60/882,655.56 = 349,216.08/x
  3. Step 3: Cross multiply
    639,603.60x = 882,655.56 × 349,216.08
  4. Step 4: Simplify right side
    639,603.60x = 308,237,514,653.41
  5. Step 5: Solve for x
    x = 308,237,514,653.41/639,603.60
  6. Step 6: Final answer
    x = 481,919.61

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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.