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Finding the Fourth Proportional to 545,856.30, 818,820.90 and 186,021.90

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Solution

The fourth proportional to 545,856.30, 818,820.90 and 186,021.90 is: 279,045.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,856.30 : 818,820.90 = 186,021.90 : x
  2. Step 2: Convert to fraction form
    545,856.30/818,820.90 = 186,021.90/x
  3. Step 3: Cross multiply
    545,856.30x = 818,820.90 × 186,021.90
  4. Step 4: Simplify right side
    545,856.30x = 152,318,619,577.71
  5. Step 5: Solve for x
    x = 152,318,619,577.71/545,856.30
  6. Step 6: Final answer
    x = 279,045.27

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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.