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Finding the Fourth Proportional to 65,812.68, 98,718.78 and 19,065.48

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Solution

The fourth proportional to 65,812.68, 98,718.78 and 19,065.48 is: 28,598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,812.68 : 98,718.78 = 19,065.48 : x
  2. Step 2: Convert to fraction form
    65,812.68/98,718.78 = 19,065.48/x
  3. Step 3: Cross multiply
    65,812.68x = 98,718.78 × 19,065.48
  4. Step 4: Simplify right side
    65,812.68x = 1,882,120,925.71
  5. Step 5: Solve for x
    x = 1,882,120,925.71/65,812.68
  6. Step 6: Final answer
    x = 28,598.15

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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.