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Finding the Fourth Proportional to 518,954.40, 778,431.60 and 341,661.60

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Solution

The fourth proportional to 518,954.40, 778,431.60 and 341,661.60 is: 512,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,954.40 : 778,431.60 = 341,661.60 : x
  2. Step 2: Convert to fraction form
    518,954.40/778,431.60 = 341,661.60/x
  3. Step 3: Cross multiply
    518,954.40x = 778,431.60 × 341,661.60
  4. Step 4: Simplify right side
    518,954.40x = 265,960,185,946.56
  5. Step 5: Solve for x
    x = 265,960,185,946.56/518,954.40
  6. Step 6: Final answer
    x = 512,492.40

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Similar ratio
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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.