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Finding the Fourth Proportional to 111,212.74, 153,510.99 and 67,605.13

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Solution

The fourth proportional to 111,212.74, 153,510.99 and 67,605.13 is: 93,317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,212.74 : 153,510.99 = 67,605.13 : x
  2. Step 2: Convert to fraction form
    111,212.74/153,510.99 = 67,605.13/x
  3. Step 3: Cross multiply
    111,212.74x = 153,510.99 × 67,605.13
  4. Step 4: Simplify right side
    111,212.74x = 10,378,130,435.38
  5. Step 5: Solve for x
    x = 10,378,130,435.38/111,212.74
  6. Step 6: Final answer
    x = 93,317.82

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Double scale
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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.