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Finding the Fourth Proportional to 103,636.96, 155,192.88 and 64,074.08

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Solution

The fourth proportional to 103,636.96, 155,192.88 and 64,074.08 is: 95,948.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.96 : 155,192.88 = 64,074.08 : x
  2. Step 2: Convert to fraction form
    103,636.96/155,192.88 = 64,074.08/x
  3. Step 3: Cross multiply
    103,636.96x = 155,192.88 × 64,074.08
  4. Step 4: Simplify right side
    103,636.96x = 9,943,841,008.55
  5. Step 5: Solve for x
    x = 9,943,841,008.55/103,636.96
  6. Step 6: Final answer
    x = 95,948.79

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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.