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Finding the Fourth Proportional to 116,510.72, 160,780.08 and 71,264.48

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Solution

The fourth proportional to 116,510.72, 160,780.08 and 71,264.48 is: 98,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,510.72 : 160,780.08 = 71,264.48 : x
  2. Step 2: Convert to fraction form
    116,510.72/160,780.08 = 71,264.48/x
  3. Step 3: Cross multiply
    116,510.72x = 160,780.08 × 71,264.48
  4. Step 4: Simplify right side
    116,510.72x = 11,457,908,795.56
  5. Step 5: Solve for x
    x = 11,457,908,795.56/116,510.72
  6. Step 6: Final answer
    x = 98,342.10

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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.