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Finding the Fourth Proportional to 128,097.42, 192,263.33 and 64,961.13

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Solution

The fourth proportional to 128,097.42, 192,263.33 and 64,961.13 is: 97,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,097.42 : 192,263.33 = 64,961.13 : x
  2. Step 2: Convert to fraction form
    128,097.42/192,263.33 = 64,961.13/x
  3. Step 3: Cross multiply
    128,097.42x = 192,263.33 × 64,961.13
  4. Step 4: Simplify right side
    128,097.42x = 12,489,643,174.36
  5. Step 5: Solve for x
    x = 12,489,643,174.36/128,097.42
  6. Step 6: Final answer
    x = 97,501.13

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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.