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Finding the Fourth Proportional to 519,960.30, 779,940.45 and 348,718.20

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Solution

The fourth proportional to 519,960.30, 779,940.45 and 348,718.20 is: 523,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,960.30 : 779,940.45 = 348,718.20 : x
  2. Step 2: Convert to fraction form
    519,960.30/779,940.45 = 348,718.20/x
  3. Step 3: Cross multiply
    519,960.30x = 779,940.45 × 348,718.20
  4. Step 4: Simplify right side
    519,960.30x = 271,979,429,831.19
  5. Step 5: Solve for x
    x = 271,979,429,831.19/519,960.30
  6. Step 6: Final answer
    x = 523,077.30

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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.