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Finding the Fourth Proportional to 111,578.17, 153,977.69 and 61,277.17

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Solution

The fourth proportional to 111,578.17, 153,977.69 and 61,277.17 is: 84,562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,578.17 : 153,977.69 = 61,277.17 : x
  2. Step 2: Convert to fraction form
    111,578.17/153,977.69 = 61,277.17/x
  3. Step 3: Cross multiply
    111,578.17x = 153,977.69 × 61,277.17
  4. Step 4: Simplify right side
    111,578.17x = 9,435,316,010.06
  5. Step 5: Solve for x
    x = 9,435,316,010.06/111,578.17
  6. Step 6: Final answer
    x = 84,562.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.