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Finding the Fourth Proportional to 111,569.56, 167,354.40 and 70,045.72

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Solution

The fourth proportional to 111,569.56, 167,354.40 and 70,045.72 is: 105,068.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,569.56 : 167,354.40 = 70,045.72 : x
  2. Step 2: Convert to fraction form
    111,569.56/167,354.40 = 70,045.72/x
  3. Step 3: Cross multiply
    111,569.56x = 167,354.40 × 70,045.72
  4. Step 4: Simplify right side
    111,569.56x = 11,722,459,443.17
  5. Step 5: Solve for x
    x = 11,722,459,443.17/111,569.56
  6. Step 6: Final answer
    x = 105,068.62

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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.