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Finding the Fourth Proportional to 128,547.39, 192,945.77 and 62,034.34

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Solution

The fourth proportional to 128,547.39, 192,945.77 and 62,034.34 is: 93,111.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,547.39 : 192,945.77 = 62,034.34 : x
  2. Step 2: Convert to fraction form
    128,547.39/192,945.77 = 62,034.34/x
  3. Step 3: Cross multiply
    128,547.39x = 192,945.77 × 62,034.34
  4. Step 4: Simplify right side
    128,547.39x = 11,969,263,497.74
  5. Step 5: Solve for x
    x = 11,969,263,497.74/128,547.39
  6. Step 6: Final answer
    x = 93,111.68

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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.