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Finding the Fourth Proportional to 73,718.40, 110,577.60 and 70,492.80

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Solution

The fourth proportional to 73,718.40, 110,577.60 and 70,492.80 is: 105,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,718.40 : 110,577.60 = 70,492.80 : x
  2. Step 2: Convert to fraction form
    73,718.40/110,577.60 = 70,492.80/x
  3. Step 3: Cross multiply
    73,718.40x = 110,577.60 × 70,492.80
  4. Step 4: Simplify right side
    73,718.40x = 7,794,924,641.28
  5. Step 5: Solve for x
    x = 7,794,924,641.28/73,718.40
  6. Step 6: Final answer
    x = 105,739.20

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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.