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Finding the Fourth Proportional to 98,792.66, 136,321.16 and 56,348.66

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Solution

The fourth proportional to 98,792.66, 136,321.16 and 56,348.66 is: 77,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,792.66 : 136,321.16 = 56,348.66 : x
  2. Step 2: Convert to fraction form
    98,792.66/136,321.16 = 56,348.66/x
  3. Step 3: Cross multiply
    98,792.66x = 136,321.16 × 56,348.66
  4. Step 4: Simplify right side
    98,792.66x = 7,681,514,695.65
  5. Step 5: Solve for x
    x = 7,681,514,695.65/98,792.66
  6. Step 6: Final answer
    x = 77,753.90

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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.