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Finding the Fourth Proportional to 59,806.40, 89,721.60 and 17,686.40

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Solution

The fourth proportional to 59,806.40, 89,721.60 and 17,686.40 is: 26,533.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,806.40 : 89,721.60 = 17,686.40 : x
  2. Step 2: Convert to fraction form
    59,806.40/89,721.60 = 17,686.40/x
  3. Step 3: Cross multiply
    59,806.40x = 89,721.60 × 17,686.40
  4. Step 4: Simplify right side
    59,806.40x = 1,586,852,106.24
  5. Step 5: Solve for x
    x = 1,586,852,106.24/59,806.40
  6. Step 6: Final answer
    x = 26,533.15

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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.