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Finding the Fourth Proportional to 405,901.67, 560,256.90 and 236,168.60

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Solution

The fourth proportional to 405,901.67, 560,256.90 and 236,168.60 is: 325,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,901.67 : 560,256.90 = 236,168.60 : x
  2. Step 2: Convert to fraction form
    405,901.67/560,256.90 = 236,168.60/x
  3. Step 3: Cross multiply
    405,901.67x = 560,256.90 × 236,168.60
  4. Step 4: Simplify right side
    405,901.67x = 132,315,087,713.34
  5. Step 5: Solve for x
    x = 132,315,087,713.34/405,901.67
  6. Step 6: Final answer
    x = 325,978.18

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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.