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Finding the Fourth Proportional to 153,366.78, 211,596.93 and 92,918.10

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Solution

The fourth proportional to 153,366.78, 211,596.93 and 92,918.10 is: 128,197.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,366.78 : 211,596.93 = 92,918.10 : x
  2. Step 2: Convert to fraction form
    153,366.78/211,596.93 = 92,918.10/x
  3. Step 3: Cross multiply
    153,366.78x = 211,596.93 × 92,918.10
  4. Step 4: Simplify right side
    153,366.78x = 19,661,184,701.43
  5. Step 5: Solve for x
    x = 19,661,184,701.43/153,366.78
  6. Step 6: Final answer
    x = 128,197.15

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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.