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Finding the Fourth Proportional to 111,068.59, 153,299.25 and 76,661.62

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Solution

The fourth proportional to 111,068.59, 153,299.25 and 76,661.62 is: 105,810.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,068.59 : 153,299.25 = 76,661.62 : x
  2. Step 2: Convert to fraction form
    111,068.59/153,299.25 = 76,661.62/x
  3. Step 3: Cross multiply
    111,068.59x = 153,299.25 × 76,661.62
  4. Step 4: Simplify right side
    111,068.59x = 11,752,168,849.79
  5. Step 5: Solve for x
    x = 11,752,168,849.79/111,068.59
  6. Step 6: Final answer
    x = 105,810.01

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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.