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Finding the Fourth Proportional to 9,964,812.60, 14,937,814.80 and 5,409,145.80

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Solution

The fourth proportional to 9,964,812.60, 14,937,814.80 and 5,409,145.80 is: 8,108,613.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,964,812.60 : 14,937,814.80 = 5,409,145.80 : x
  2. Step 2: Convert to fraction form
    9,964,812.60/14,937,814.80 = 5,409,145.80/x
  3. Step 3: Cross multiply
    9,964,812.60x = 14,937,814.80 × 5,409,145.80
  4. Step 4: Simplify right side
    9,964,812.60x = 80,800,818,186,597.84
  5. Step 5: Solve for x
    x = 80,800,818,186,597.84/9,964,812.60
  6. Step 6: Final answer
    x = 8,108,613.92

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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.