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Finding the Fourth Proportional to 405,270.80, 607,848.60 and 124,816.40

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Solution

The fourth proportional to 405,270.80, 607,848.60 and 124,816.40 is: 187,206.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,270.80 : 607,848.60 = 124,816.40 : x
  2. Step 2: Convert to fraction form
    405,270.80/607,848.60 = 124,816.40/x
  3. Step 3: Cross multiply
    405,270.80x = 607,848.60 × 124,816.40
  4. Step 4: Simplify right side
    405,270.80x = 75,869,473,997.04
  5. Step 5: Solve for x
    x = 75,869,473,997.04/405,270.80
  6. Step 6: Final answer
    x = 187,206.86

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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.