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Finding the Fourth Proportional to 474,421.80, 711,632.70 and 158,845.80

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Solution

The fourth proportional to 474,421.80, 711,632.70 and 158,845.80 is: 238,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,421.80 : 711,632.70 = 158,845.80 : x
  2. Step 2: Convert to fraction form
    474,421.80/711,632.70 = 158,845.80/x
  3. Step 3: Cross multiply
    474,421.80x = 711,632.70 × 158,845.80
  4. Step 4: Simplify right side
    474,421.80x = 113,039,865,537.66
  5. Step 5: Solve for x
    x = 113,039,865,537.66/474,421.80
  6. Step 6: Final answer
    x = 238,268.70

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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.