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Finding the Fourth Proportional to 128,548.01, 192,854.62 and 38,590.22

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Solution

The fourth proportional to 128,548.01, 192,854.62 and 38,590.22 is: 57,895.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,548.01 : 192,854.62 = 38,590.22 : x
  2. Step 2: Convert to fraction form
    128,548.01/192,854.62 = 38,590.22/x
  3. Step 3: Cross multiply
    128,548.01x = 192,854.62 × 38,590.22
  4. Step 4: Simplify right side
    128,548.01x = 7,442,302,744.19
  5. Step 5: Solve for x
    x = 7,442,302,744.19/128,548.01
  6. Step 6: Final answer
    x = 57,895.12

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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.