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Finding the Fourth Proportional to 415,455.20, 623,150.40 and 162,686.60

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Solution

The fourth proportional to 415,455.20, 623,150.40 and 162,686.60 is: 244,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,455.20 : 623,150.40 = 162,686.60 : x
  2. Step 2: Convert to fraction form
    415,455.20/623,150.40 = 162,686.60/x
  3. Step 3: Cross multiply
    415,455.20x = 623,150.40 × 162,686.60
  4. Step 4: Simplify right side
    415,455.20x = 101,378,219,864.64
  5. Step 5: Solve for x
    x = 101,378,219,864.64/415,455.20
  6. Step 6: Final answer
    x = 244,017.21

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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.