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Finding the Fourth Proportional to 235,430.10, 353,145.15 and 205,905.60

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Solution

The fourth proportional to 235,430.10, 353,145.15 and 205,905.60 is: 308,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,430.10 : 353,145.15 = 205,905.60 : x
  2. Step 2: Convert to fraction form
    235,430.10/353,145.15 = 205,905.60/x
  3. Step 3: Cross multiply
    235,430.10x = 353,145.15 × 205,905.60
  4. Step 4: Simplify right side
    235,430.10x = 72,714,563,997.84
  5. Step 5: Solve for x
    x = 72,714,563,997.84/235,430.10
  6. Step 6: Final answer
    x = 308,858.40

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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.