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Finding the Fourth Proportional to 70,106.50, 105,159.98 and 17,515.99

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Solution

The fourth proportional to 70,106.50, 105,159.98 and 17,515.99 is: 26,274.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,106.50 : 105,159.98 = 17,515.99 : x
  2. Step 2: Convert to fraction form
    70,106.50/105,159.98 = 17,515.99/x
  3. Step 3: Cross multiply
    70,106.50x = 105,159.98 × 17,515.99
  4. Step 4: Simplify right side
    70,106.50x = 1,841,981,070.50
  5. Step 5: Solve for x
    x = 1,841,981,070.50/70,106.50
  6. Step 6: Final answer
    x = 26,274.04

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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.