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Finding the Fourth Proportional to 124,798.51, 172,219.12 and 68,208.67

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Solution

The fourth proportional to 124,798.51, 172,219.12 and 68,208.67 is: 94,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,798.51 : 172,219.12 = 68,208.67 : x
  2. Step 2: Convert to fraction form
    124,798.51/172,219.12 = 68,208.67/x
  3. Step 3: Cross multiply
    124,798.51x = 172,219.12 × 68,208.67
  4. Step 4: Simplify right side
    124,798.51x = 11,746,837,123.77
  5. Step 5: Solve for x
    x = 11,746,837,123.77/124,798.51
  6. Step 6: Final answer
    x = 94,126.42

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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.