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Finding the Fourth Proportional to 188,455.01, 260,056.98 and 103,572.07

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Solution

The fourth proportional to 188,455.01, 260,056.98 and 103,572.07 is: 142,923.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,455.01 : 260,056.98 = 103,572.07 : x
  2. Step 2: Convert to fraction form
    188,455.01/260,056.98 = 103,572.07/x
  3. Step 3: Cross multiply
    188,455.01x = 260,056.98 × 103,572.07
  4. Step 4: Simplify right side
    188,455.01x = 26,934,639,086.41
  5. Step 5: Solve for x
    x = 26,934,639,086.41/188,455.01
  6. Step 6: Final answer
    x = 142,923.45

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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.