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Finding the Fourth Proportional to 235,918.01, 325,570.56 and 128,487.96

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Solution

The fourth proportional to 235,918.01, 325,570.56 and 128,487.96 is: 177,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,918.01 : 325,570.56 = 128,487.96 : x
  2. Step 2: Convert to fraction form
    235,918.01/325,570.56 = 128,487.96/x
  3. Step 3: Cross multiply
    235,918.01x = 325,570.56 × 128,487.96
  4. Step 4: Simplify right side
    235,918.01x = 41,831,896,608.63
  5. Step 5: Solve for x
    x = 41,831,896,608.63/235,918.01
  6. Step 6: Final answer
    x = 177,315.40

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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.