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Finding the Fourth Proportional to 405,906.70, 560,263.80 and 236,173.60

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Solution

The fourth proportional to 405,906.70, 560,263.80 and 236,173.60 is: 325,985.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,906.70 : 560,263.80 = 236,173.60 : x
  2. Step 2: Convert to fraction form
    405,906.70/560,263.80 = 236,173.60/x
  3. Step 3: Cross multiply
    405,906.70x = 560,263.80 × 236,173.60
  4. Step 4: Simplify right side
    405,906.70x = 132,319,518,595.68
  5. Step 5: Solve for x
    x = 132,319,518,595.68/405,906.70
  6. Step 6: Final answer
    x = 325,985.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.