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Finding the Fourth Proportional to 98,696.16, 148,058.88 and 28,566.72

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Solution

The fourth proportional to 98,696.16, 148,058.88 and 28,566.72 is: 42,854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,696.16 : 148,058.88 = 28,566.72 : x
  2. Step 2: Convert to fraction form
    98,696.16/148,058.88 = 28,566.72/x
  3. Step 3: Cross multiply
    98,696.16x = 148,058.88 × 28,566.72
  4. Step 4: Simplify right side
    98,696.16x = 4,229,556,568.47
  5. Step 5: Solve for x
    x = 4,229,556,568.47/98,696.16
  6. Step 6: Final answer
    x = 42,854.32

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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.