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Finding the Fourth Proportional to 128,566.80, 193,068.90 and 95,324.40

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Solution

The fourth proportional to 128,566.80, 193,068.90 and 95,324.40 is: 143,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,566.80 : 193,068.90 = 95,324.40 : x
  2. Step 2: Convert to fraction form
    128,566.80/193,068.90 = 95,324.40/x
  3. Step 3: Cross multiply
    128,566.80x = 193,068.90 × 95,324.40
  4. Step 4: Simplify right side
    128,566.80x = 18,404,177,051.16
  5. Step 5: Solve for x
    x = 18,404,177,051.16/128,566.80
  6. Step 6: Final answer
    x = 143,148.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.