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Finding the Fourth Proportional to 325,909.40, 488,864.10 and 314,099.60

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Solution

The fourth proportional to 325,909.40, 488,864.10 and 314,099.60 is: 471,149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,909.40 : 488,864.10 = 314,099.60 : x
  2. Step 2: Convert to fraction form
    325,909.40/488,864.10 = 314,099.60/x
  3. Step 3: Cross multiply
    325,909.40x = 488,864.10 × 314,099.60
  4. Step 4: Simplify right side
    325,909.40x = 153,552,018,264.36
  5. Step 5: Solve for x
    x = 153,552,018,264.36/325,909.40
  6. Step 6: Final answer
    x = 471,149.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.