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Finding the Fourth Proportional to 128,557.36, 192,830.40 and 35,062.80

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Solution

The fourth proportional to 128,557.36, 192,830.40 and 35,062.80 is: 52,592.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,557.36 : 192,830.40 = 35,062.80 : x
  2. Step 2: Convert to fraction form
    128,557.36/192,830.40 = 35,062.80/x
  3. Step 3: Cross multiply
    128,557.36x = 192,830.40 × 35,062.80
  4. Step 4: Simplify right side
    128,557.36x = 6,761,173,749.12
  5. Step 5: Solve for x
    x = 6,761,173,749.12/128,557.36
  6. Step 6: Final answer
    x = 52,592.66

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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.