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Finding the Fourth Proportional to 145,861.70, 218,792.55 and 145,861.70

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Solution

The fourth proportional to 145,861.70, 218,792.55 and 145,861.70 is: 218,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861.70 : 218,792.55 = 145,861.70 : x
  2. Step 2: Convert to fraction form
    145,861.70/218,792.55 = 145,861.70/x
  3. Step 3: Cross multiply
    145,861.70x = 218,792.55 × 145,861.70
  4. Step 4: Simplify right side
    145,861.70x = 31,913,453,290.34
  5. Step 5: Solve for x
    x = 31,913,453,290.34/145,861.70
  6. Step 6: Final answer
    x = 218,792.55

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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.