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Finding the Fourth Proportional to 98,916.65, 148,219.37 and 76,482.13

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Solution

The fourth proportional to 98,916.65, 148,219.37 and 76,482.13 is: 114,602.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,916.65 : 148,219.37 = 76,482.13 : x
  2. Step 2: Convert to fraction form
    98,916.65/148,219.37 = 76,482.13/x
  3. Step 3: Cross multiply
    98,916.65x = 148,219.37 × 76,482.13
  4. Step 4: Simplify right side
    98,916.65x = 11,336,133,124.86
  5. Step 5: Solve for x
    x = 11,336,133,124.86/98,916.65
  6. Step 6: Final answer
    x = 114,602.88

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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.