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Finding the Fourth Proportional to 463,339.35, 639,400.14 and 256,603.46

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Solution

The fourth proportional to 463,339.35, 639,400.14 and 256,603.46 is: 354,108.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,339.35 : 639,400.14 = 256,603.46 : x
  2. Step 2: Convert to fraction form
    463,339.35/639,400.14 = 256,603.46/x
  3. Step 3: Cross multiply
    463,339.35x = 639,400.14 × 256,603.46
  4. Step 4: Simplify right side
    463,339.35x = 164,072,285,051.48
  5. Step 5: Solve for x
    x = 164,072,285,051.48/463,339.35
  6. Step 6: Final answer
    x = 354,108.25

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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.