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Finding the Fourth Proportional to 235,501.86, 324,989.51 and 128,069.59

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Solution

The fourth proportional to 235,501.86, 324,989.51 and 128,069.59 is: 176,734.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,501.86 : 324,989.51 = 128,069.59 : x
  2. Step 2: Convert to fraction form
    235,501.86/324,989.51 = 128,069.59/x
  3. Step 3: Cross multiply
    235,501.86x = 324,989.51 × 128,069.59
  4. Step 4: Simplify right side
    235,501.86x = 41,621,271,675.05
  5. Step 5: Solve for x
    x = 41,621,271,675.05/235,501.86
  6. Step 6: Final answer
    x = 176,734.36

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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.