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Finding the Fourth Proportional to 405,911.40, 608,867.10 and 248,058.60

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Solution

The fourth proportional to 405,911.40, 608,867.10 and 248,058.60 is: 372,087.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,911.40 : 608,867.10 = 248,058.60 : x
  2. Step 2: Convert to fraction form
    405,911.40/608,867.10 = 248,058.60/x
  3. Step 3: Cross multiply
    405,911.40x = 608,867.10 × 248,058.60
  4. Step 4: Simplify right side
    405,911.40x = 151,034,720,412.06
  5. Step 5: Solve for x
    x = 151,034,720,412.06/405,911.40
  6. Step 6: Final answer
    x = 372,087.90

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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.