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Finding the Fourth Proportional to 128,539.64, 192,807.40 and 35,045.39

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Solution

The fourth proportional to 128,539.64, 192,807.40 and 35,045.39 is: 52,567.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,539.64 : 192,807.40 = 35,045.39 : x
  2. Step 2: Convert to fraction form
    128,539.64/192,807.40 = 35,045.39/x
  3. Step 3: Cross multiply
    128,539.64x = 192,807.40 × 35,045.39
  4. Step 4: Simplify right side
    128,539.64x = 6,757,010,527.89
  5. Step 5: Solve for x
    x = 6,757,010,527.89/128,539.64
  6. Step 6: Final answer
    x = 52,567.52

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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.