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Finding the Fourth Proportional to 61,086.40, 84,339.84 and 46,913.92

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Solution

The fourth proportional to 61,086.40, 84,339.84 and 46,913.92 is: 64,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,086.40 : 84,339.84 = 46,913.92 : x
  2. Step 2: Convert to fraction form
    61,086.40/84,339.84 = 46,913.92/x
  3. Step 3: Cross multiply
    61,086.40x = 84,339.84 × 46,913.92
  4. Step 4: Simplify right side
    61,086.40x = 3,956,712,506.57
  5. Step 5: Solve for x
    x = 3,956,712,506.57/61,086.40
  6. Step 6: Final answer
    x = 64,772.40

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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.