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Finding the Fourth Proportional to 97,859,632.80, 146,789,449.20 and 65,611,005.60

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Solution

The fourth proportional to 97,859,632.80, 146,789,449.20 and 65,611,005.60 is: 98,416,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,859,632.80 : 146,789,449.20 = 65,611,005.60 : x
  2. Step 2: Convert to fraction form
    97,859,632.80/146,789,449.20 = 65,611,005.60/x
  3. Step 3: Cross multiply
    97,859,632.80x = 146,789,449.20 × 65,611,005.60
  4. Step 4: Simplify right side
    97,859,632.80x = 9,631,003,373,482,114
  5. Step 5: Solve for x
    x = 9,631,003,373,482,114/97,859,632.80
  6. Step 6: Final answer
    x = 98,416,508.40

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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.