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Finding the Fourth Proportional to 98,818.86, 136,368.90 and 53,495.85

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Solution

The fourth proportional to 98,818.86, 136,368.90 and 53,495.85 is: 73,823.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,818.86 : 136,368.90 = 53,495.85 : x
  2. Step 2: Convert to fraction form
    98,818.86/136,368.90 = 53,495.85/x
  3. Step 3: Cross multiply
    98,818.86x = 136,368.90 × 53,495.85
  4. Step 4: Simplify right side
    98,818.86x = 7,295,170,219.07
  5. Step 5: Solve for x
    x = 7,295,170,219.07/98,818.86
  6. Step 6: Final answer
    x = 73,823.66

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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.