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Finding the Fourth Proportional to 398,200.80, 596,912.40 and 356,210.40

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Solution

The fourth proportional to 398,200.80, 596,912.40 and 356,210.40 is: 533,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,200.80 : 596,912.40 = 356,210.40 : x
  2. Step 2: Convert to fraction form
    398,200.80/596,912.40 = 356,210.40/x
  3. Step 3: Cross multiply
    398,200.80x = 596,912.40 × 356,210.40
  4. Step 4: Simplify right side
    398,200.80x = 212,626,404,768.96
  5. Step 5: Solve for x
    x = 212,626,404,768.96/398,200.80
  6. Step 6: Final answer
    x = 533,967.80

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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.