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Finding the Fourth Proportional to 613,304.40, 919,999.80 and 347,192.40

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Solution

The fourth proportional to 613,304.40, 919,999.80 and 347,192.40 is: 520,813.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,304.40 : 919,999.80 = 347,192.40 : x
  2. Step 2: Convert to fraction form
    613,304.40/919,999.80 = 347,192.40/x
  3. Step 3: Cross multiply
    613,304.40x = 919,999.80 × 347,192.40
  4. Step 4: Simplify right side
    613,304.40x = 319,416,938,561.52
  5. Step 5: Solve for x
    x = 319,416,938,561.52/613,304.40
  6. Step 6: Final answer
    x = 520,813.06

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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.