Home / 209,010.96-288,585.36-128,546.64

Finding the Fourth Proportional to 209,010.96, 288,585.36 and 128,546.64

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Solution

The fourth proportional to 209,010.96, 288,585.36 and 128,546.64 is: 177,486.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,010.96 : 288,585.36 = 128,546.64 : x
  2. Step 2: Convert to fraction form
    209,010.96/288,585.36 = 128,546.64/x
  3. Step 3: Cross multiply
    209,010.96x = 288,585.36 × 128,546.64
  4. Step 4: Simplify right side
    209,010.96x = 37,096,678,381.19
  5. Step 5: Solve for x
    x = 37,096,678,381.19/209,010.96
  6. Step 6: Final answer
    x = 177,486.76

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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.