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Finding the Fourth Proportional to 55,661.40, 83,492.10 and 14,108.40

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Solution

The fourth proportional to 55,661.40, 83,492.10 and 14,108.40 is: 21,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,661.40 : 83,492.10 = 14,108.40 : x
  2. Step 2: Convert to fraction form
    55,661.40/83,492.10 = 14,108.40/x
  3. Step 3: Cross multiply
    55,661.40x = 83,492.10 × 14,108.40
  4. Step 4: Simplify right side
    55,661.40x = 1,177,939,943.64
  5. Step 5: Solve for x
    x = 1,177,939,943.64/55,661.40
  6. Step 6: Final answer
    x = 21,162.60

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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.