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Finding the Fourth Proportional to 544,490.08, 816,774 and 145,128.76

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Solution

The fourth proportional to 544,490.08, 816,774 and 145,128.76 is: 217,703.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,490.08 : 816,774 = 145,128.76 : x
  2. Step 2: Convert to fraction form
    544,490.08/816,774 = 145,128.76/x
  3. Step 3: Cross multiply
    544,490.08x = 816,774 × 145,128.76
  4. Step 4: Simplify right side
    544,490.08x = 118,537,397,820.24
  5. Step 5: Solve for x
    x = 118,537,397,820.24/544,490.08
  6. Step 6: Final answer
    x = 217,703.50

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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.