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Finding the Fourth Proportional to 66,813,543.60, 100,220,315.40 and 58,735,640.40

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Solution

The fourth proportional to 66,813,543.60, 100,220,315.40 and 58,735,640.40 is: 88,103,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,813,543.60 : 100,220,315.40 = 58,735,640.40 : x
  2. Step 2: Convert to fraction form
    66,813,543.60/100,220,315.40 = 58,735,640.40/x
  3. Step 3: Cross multiply
    66,813,543.60x = 100,220,315.40 × 58,735,640.40
  4. Step 4: Simplify right side
    66,813,543.60x = 5,886,504,406,108,982
  5. Step 5: Solve for x
    x = 5,886,504,406,108,982/66,813,543.60
  6. Step 6: Final answer
    x = 88,103,460.60

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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.