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Finding the Fourth Proportional to 72,972.64, 100,635.06 and 46,068.40

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Solution

The fourth proportional to 72,972.64, 100,635.06 and 46,068.40 is: 63,531.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,972.64 : 100,635.06 = 46,068.40 : x
  2. Step 2: Convert to fraction form
    72,972.64/100,635.06 = 46,068.40/x
  3. Step 3: Cross multiply
    72,972.64x = 100,635.06 × 46,068.40
  4. Step 4: Simplify right side
    72,972.64x = 4,636,096,198.10
  5. Step 5: Solve for x
    x = 4,636,096,198.10/72,972.64
  6. Step 6: Final answer
    x = 63,531.98

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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.