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Finding the Fourth Proportional to 113,886.70, 170,902.95 and 66,501.70

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Solution

The fourth proportional to 113,886.70, 170,902.95 and 66,501.70 is: 99,795.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,886.70 : 170,902.95 = 66,501.70 : x
  2. Step 2: Convert to fraction form
    113,886.70/170,902.95 = 66,501.70/x
  3. Step 3: Cross multiply
    113,886.70x = 170,902.95 × 66,501.70
  4. Step 4: Simplify right side
    113,886.70x = 11,365,336,710.02
  5. Step 5: Solve for x
    x = 11,365,336,710.02/113,886.70
  6. Step 6: Final answer
    x = 99,795.12

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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.