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Finding the Fourth Proportional to 72,929.64, 100,641.51 and 41,097.90

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Solution

The fourth proportional to 72,929.64, 100,641.51 and 41,097.90 is: 56,714.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,929.64 : 100,641.51 = 41,097.90 : x
  2. Step 2: Convert to fraction form
    72,929.64/100,641.51 = 41,097.90/x
  3. Step 3: Cross multiply
    72,929.64x = 100,641.51 × 41,097.90
  4. Step 4: Simplify right side
    72,929.64x = 4,136,154,713.83
  5. Step 5: Solve for x
    x = 4,136,154,713.83/72,929.64
  6. Step 6: Final answer
    x = 56,714.32

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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.