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Finding the Fourth Proportional to 545,062.82, 817,703.58 and 189,981.50

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Solution

The fourth proportional to 545,062.82, 817,703.58 and 189,981.50 is: 285,010.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,062.82 : 817,703.58 = 189,981.50 : x
  2. Step 2: Convert to fraction form
    545,062.82/817,703.58 = 189,981.50/x
  3. Step 3: Cross multiply
    545,062.82x = 817,703.58 × 189,981.50
  4. Step 4: Simplify right side
    545,062.82x = 155,348,552,683.77
  5. Step 5: Solve for x
    x = 155,348,552,683.77/545,062.82
  6. Step 6: Final answer
    x = 285,010.36

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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.