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Finding the Fourth Proportional to 125,133.51, 172,686.51 and 68,541.24

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Solution

The fourth proportional to 125,133.51, 172,686.51 and 68,541.24 is: 94,588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,133.51 : 172,686.51 = 68,541.24 : x
  2. Step 2: Convert to fraction form
    125,133.51/172,686.51 = 68,541.24/x
  3. Step 3: Cross multiply
    125,133.51x = 172,686.51 × 68,541.24
  4. Step 4: Simplify right side
    125,133.51x = 11,836,147,526.67
  5. Step 5: Solve for x
    x = 11,836,147,526.67/125,133.51
  6. Step 6: Final answer
    x = 94,588.15

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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.