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Finding the Fourth Proportional to 153,263.58, 211,501.71 and 86,195.58

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Solution

The fourth proportional to 153,263.58, 211,501.71 and 86,195.58 is: 118,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,263.58 : 211,501.71 = 86,195.58 : x
  2. Step 2: Convert to fraction form
    153,263.58/211,501.71 = 86,195.58/x
  3. Step 3: Cross multiply
    153,263.58x = 211,501.71 × 86,195.58
  4. Step 4: Simplify right side
    153,263.58x = 18,230,512,564.44
  5. Step 5: Solve for x
    x = 18,230,512,564.44/153,263.58
  6. Step 6: Final answer
    x = 118,948.76

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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.