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Finding the Fourth Proportional to 21,908,670.66, 32,865,995.21 and 9,126,186.01

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Solution

The fourth proportional to 21,908,670.66, 32,865,995.21 and 9,126,186.01 is: 13,690,524.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908,670.66 : 32,865,995.21 = 9,126,186.01 : x
  2. Step 2: Convert to fraction form
    21,908,670.66/32,865,995.21 = 9,126,186.01/x
  3. Step 3: Cross multiply
    21,908,670.66x = 32,865,995.21 × 9,126,186.01
  4. Step 4: Simplify right side
    21,908,670.66x = 299,941,185,562,433.06
  5. Step 5: Solve for x
    x = 299,941,185,562,433.06/21,908,670.66
  6. Step 6: Final answer
    x = 13,690,524.19

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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.