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Finding the Fourth Proportional to 178,042.50, 245,698.65 and 98,554.50

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Solution

The fourth proportional to 178,042.50, 245,698.65 and 98,554.50 is: 136,005.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,042.50 : 245,698.65 = 98,554.50 : x
  2. Step 2: Convert to fraction form
    178,042.50/245,698.65 = 98,554.50/x
  3. Step 3: Cross multiply
    178,042.50x = 245,698.65 × 98,554.50
  4. Step 4: Simplify right side
    178,042.50x = 24,214,707,601.43
  5. Step 5: Solve for x
    x = 24,214,707,601.43/178,042.50
  6. Step 6: Final answer
    x = 136,005.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.