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Finding the Fourth Proportional to 98,891.80, 136,470.35 and 53,569.67

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Solution

The fourth proportional to 98,891.80, 136,470.35 and 53,569.67 is: 73,925.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,891.80 : 136,470.35 = 53,569.67 : x
  2. Step 2: Convert to fraction form
    98,891.80/136,470.35 = 53,569.67/x
  3. Step 3: Cross multiply
    98,891.80x = 136,470.35 × 53,569.67
  4. Step 4: Simplify right side
    98,891.80x = 7,310,671,065.86
  5. Step 5: Solve for x
    x = 7,310,671,065.86/98,891.80
  6. Step 6: Final answer
    x = 73,925.96

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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.