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Finding the Fourth Proportional to 98,381.85, 135,787.13 and 62,564.94

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Solution

The fourth proportional to 98,381.85, 135,787.13 and 62,564.94 is: 86,352.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,381.85 : 135,787.13 = 62,564.94 : x
  2. Step 2: Convert to fraction form
    98,381.85/135,787.13 = 62,564.94/x
  3. Step 3: Cross multiply
    98,381.85x = 135,787.13 × 62,564.94
  4. Step 4: Simplify right side
    98,381.85x = 8,495,513,328.40
  5. Step 5: Solve for x
    x = 8,495,513,328.40/98,381.85
  6. Step 6: Final answer
    x = 86,352.45

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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.