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Finding the Fourth Proportional to 410,840.40, 616,260.60 and 340,856.40

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Solution

The fourth proportional to 410,840.40, 616,260.60 and 340,856.40 is: 511,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,840.40 : 616,260.60 = 340,856.40 : x
  2. Step 2: Convert to fraction form
    410,840.40/616,260.60 = 340,856.40/x
  3. Step 3: Cross multiply
    410,840.40x = 616,260.60 × 340,856.40
  4. Step 4: Simplify right side
    410,840.40x = 210,056,369,577.84
  5. Step 5: Solve for x
    x = 210,056,369,577.84/410,840.40
  6. Step 6: Final answer
    x = 511,284.60

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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.