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Finding the Fourth Proportional to 98,771.60, 136,303.76 and 53,448.59

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Solution

The fourth proportional to 98,771.60, 136,303.76 and 53,448.59 is: 73,758.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,771.60 : 136,303.76 = 53,448.59 : x
  2. Step 2: Convert to fraction form
    98,771.60/136,303.76 = 53,448.59/x
  3. Step 3: Cross multiply
    98,771.60x = 136,303.76 × 53,448.59
  4. Step 4: Simplify right side
    98,771.60x = 7,285,242,834.94
  5. Step 5: Solve for x
    x = 7,285,242,834.94/98,771.60
  6. Step 6: Final answer
    x = 73,758.48

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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.