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Finding the Fourth Proportional to 188,495.40, 260,124.51 and 103,617.93

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Solution

The fourth proportional to 188,495.40, 260,124.51 and 103,617.93 is: 142,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,495.40 : 260,124.51 = 103,617.93 : x
  2. Step 2: Convert to fraction form
    188,495.40/260,124.51 = 103,617.93/x
  3. Step 3: Cross multiply
    188,495.40x = 260,124.51 × 103,617.93
  4. Step 4: Simplify right side
    188,495.40x = 26,953,563,268.46
  5. Step 5: Solve for x
    x = 26,953,563,268.46/188,495.40
  6. Step 6: Final answer
    x = 142,993.22

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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.