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Finding the Fourth Proportional to 111,371.25, 153,699.66 and 61,070.25

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Solution

The fourth proportional to 111,371.25, 153,699.66 and 61,070.25 is: 84,280.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,371.25 : 153,699.66 = 61,070.25 : x
  2. Step 2: Convert to fraction form
    111,371.25/153,699.66 = 61,070.25/x
  3. Step 3: Cross multiply
    111,371.25x = 153,699.66 × 61,070.25
  4. Step 4: Simplify right side
    111,371.25x = 9,386,476,661.12
  5. Step 5: Solve for x
    x = 9,386,476,661.12/111,371.25
  6. Step 6: Final answer
    x = 84,280.97

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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.