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Finding the Fourth Proportional to 186,902.16, 257,958.44 and 111,455.52

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Solution

The fourth proportional to 186,902.16, 257,958.44 and 111,455.52 is: 153,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,902.16 : 257,958.44 = 111,455.52 : x
  2. Step 2: Convert to fraction form
    186,902.16/257,958.44 = 111,455.52/x
  3. Step 3: Cross multiply
    186,902.16x = 257,958.44 × 111,455.52
  4. Step 4: Simplify right side
    186,902.16x = 28,750,892,068.59
  5. Step 5: Solve for x
    x = 28,750,892,068.59/186,902.16
  6. Step 6: Final answer
    x = 153,828.57

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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.