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Finding the Fourth Proportional to 393,833.40, 590,807.70 and 127,548.60

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Solution

The fourth proportional to 393,833.40, 590,807.70 and 127,548.60 is: 191,341.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,833.40 : 590,807.70 = 127,548.60 : x
  2. Step 2: Convert to fraction form
    393,833.40/590,807.70 = 127,548.60/x
  3. Step 3: Cross multiply
    393,833.40x = 590,807.70 × 127,548.60
  4. Step 4: Simplify right side
    393,833.40x = 75,356,695,004.22
  5. Step 5: Solve for x
    x = 75,356,695,004.22/393,833.40
  6. Step 6: Final answer
    x = 191,341.55

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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.