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Finding the Fourth Proportional to 358,858.54, 538,161.45 and 106,071.72

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Solution

The fourth proportional to 358,858.54, 538,161.45 and 106,071.72 is: 159,070.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,858.54 : 538,161.45 = 106,071.72 : x
  2. Step 2: Convert to fraction form
    358,858.54/538,161.45 = 106,071.72/x
  3. Step 3: Cross multiply
    358,858.54x = 538,161.45 × 106,071.72
  4. Step 4: Simplify right side
    358,858.54x = 57,083,710,639.19
  5. Step 5: Solve for x
    x = 57,083,710,639.19/358,858.54
  6. Step 6: Final answer
    x = 159,070.23

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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.