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Finding the Fourth Proportional to 128,897.58, 193,346.01 and 35,403.42

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Solution

The fourth proportional to 128,897.58, 193,346.01 and 35,403.42 is: 53,105.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897.58 : 193,346.01 = 35,403.42 : x
  2. Step 2: Convert to fraction form
    128,897.58/193,346.01 = 35,403.42/x
  3. Step 3: Cross multiply
    128,897.58x = 193,346.01 × 35,403.42
  4. Step 4: Simplify right side
    128,897.58x = 6,845,109,997.35
  5. Step 5: Solve for x
    x = 6,845,109,997.35/128,897.58
  6. Step 6: Final answer
    x = 53,105.03

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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.