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Finding the Fourth Proportional to 153,588.69, 211,935.29 and 85,600.53

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Solution

The fourth proportional to 153,588.69, 211,935.29 and 85,600.53 is: 118,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,588.69 : 211,935.29 = 85,600.53 : x
  2. Step 2: Convert to fraction form
    153,588.69/211,935.29 = 85,600.53/x
  3. Step 3: Cross multiply
    153,588.69x = 211,935.29 × 85,600.53
  4. Step 4: Simplify right side
    153,588.69x = 18,141,772,721.70
  5. Step 5: Solve for x
    x = 18,141,772,721.70/153,588.69
  6. Step 6: Final answer
    x = 118,119.20

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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.