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Finding the Fourth Proportional to 235,543.14, 325,033.54 and 128,110.87

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Solution

The fourth proportional to 235,543.14, 325,033.54 and 128,110.87 is: 176,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,543.14 : 325,033.54 = 128,110.87 : x
  2. Step 2: Convert to fraction form
    235,543.14/325,033.54 = 128,110.87/x
  3. Step 3: Cross multiply
    235,543.14x = 325,033.54 × 128,110.87
  4. Step 4: Simplify right side
    235,543.14x = 41,640,329,588.58
  5. Step 5: Solve for x
    x = 41,640,329,588.58/235,543.14
  6. Step 6: Final answer
    x = 176,784.30

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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.