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Finding the Fourth Proportional to 235,667.10, 325,221.30 and 128,237.16

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Solution

The fourth proportional to 235,667.10, 325,221.30 and 128,237.16 is: 176,967.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,667.10 : 325,221.30 = 128,237.16 : x
  2. Step 2: Convert to fraction form
    235,667.10/325,221.30 = 128,237.16/x
  3. Step 3: Cross multiply
    235,667.10x = 325,221.30 × 128,237.16
  4. Step 4: Simplify right side
    235,667.10x = 41,705,455,883.51
  5. Step 5: Solve for x
    x = 41,705,455,883.51/235,667.10
  6. Step 6: Final answer
    x = 176,967.66

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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.