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Finding the Fourth Proportional to 529,607.36, 730,919.43 and 314,745.55

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Solution

The fourth proportional to 529,607.36, 730,919.43 and 314,745.55 is: 434,385.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,607.36 : 730,919.43 = 314,745.55 : x
  2. Step 2: Convert to fraction form
    529,607.36/730,919.43 = 314,745.55/x
  3. Step 3: Cross multiply
    529,607.36x = 730,919.43 × 314,745.55
  4. Step 4: Simplify right side
    529,607.36x = 230,053,636,173.74
  5. Step 5: Solve for x
    x = 230,053,636,173.74/529,607.36
  6. Step 6: Final answer
    x = 434,385.27

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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.