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Finding the Fourth Proportional to 170,409.66, 235,137.66 and 98,775.68

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Solution

The fourth proportional to 170,409.66, 235,137.66 and 98,775.68 is: 136,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,409.66 : 235,137.66 = 98,775.68 : x
  2. Step 2: Convert to fraction form
    170,409.66/235,137.66 = 98,775.68/x
  3. Step 3: Cross multiply
    170,409.66x = 235,137.66 × 98,775.68
  4. Step 4: Simplify right side
    170,409.66x = 23,225,882,260.11
  5. Step 5: Solve for x
    x = 23,225,882,260.11/170,409.66
  6. Step 6: Final answer
    x = 136,294.40

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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.