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Finding the Fourth Proportional to 235,638.02, 325,187.43 and 128,215.01

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Solution

The fourth proportional to 235,638.02, 325,187.43 and 128,215.01 is: 176,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,638.02 : 325,187.43 = 128,215.01 : x
  2. Step 2: Convert to fraction form
    235,638.02/325,187.43 = 128,215.01/x
  3. Step 3: Cross multiply
    235,638.02x = 325,187.43 × 128,215.01
  4. Step 4: Simplify right side
    235,638.02x = 41,693,909,589.32
  5. Step 5: Solve for x
    x = 41,693,909,589.32/235,638.02
  6. Step 6: Final answer
    x = 176,940.50

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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.