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Finding the Fourth Proportional to 105,612.51, 157,476.70 and 93,876.51

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Solution

The fourth proportional to 105,612.51, 157,476.70 and 93,876.51 is: 139,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,612.51 : 157,476.70 = 93,876.51 : x
  2. Step 2: Convert to fraction form
    105,612.51/157,476.70 = 93,876.51/x
  3. Step 3: Cross multiply
    105,612.51x = 157,476.70 × 93,876.51
  4. Step 4: Simplify right side
    105,612.51x = 14,783,363,002.32
  5. Step 5: Solve for x
    x = 14,783,363,002.32/105,612.51
  6. Step 6: Final answer
    x = 139,977.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.