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Finding the Fourth Proportional to 84,925.94, 127,292.79 and 42,738.98

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Solution

The fourth proportional to 84,925.94, 127,292.79 and 42,738.98 is: 64,060.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,925.94 : 127,292.79 = 42,738.98 : x
  2. Step 2: Convert to fraction form
    84,925.94/127,292.79 = 42,738.98/x
  3. Step 3: Cross multiply
    84,925.94x = 127,292.79 × 42,738.98
  4. Step 4: Simplify right side
    84,925.94x = 5,440,364,005.95
  5. Step 5: Solve for x
    x = 5,440,364,005.95/84,925.94
  6. Step 6: Final answer
    x = 64,060.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.