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Finding the Fourth Proportional to 170,873.46, 235,806.93 and 99,256.50

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Solution

The fourth proportional to 170,873.46, 235,806.93 and 99,256.50 is: 136,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,873.46 : 235,806.93 = 99,256.50 : x
  2. Step 2: Convert to fraction form
    170,873.46/235,806.93 = 99,256.50/x
  3. Step 3: Cross multiply
    170,873.46x = 235,806.93 × 99,256.50
  4. Step 4: Simplify right side
    170,873.46x = 23,405,370,547.55
  5. Step 5: Solve for x
    x = 23,405,370,547.55/170,873.46
  6. Step 6: Final answer
    x = 136,974.87

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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.