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Finding the Fourth Proportional to 61,780.99, 91,876.70 and 59,812.69

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Solution

The fourth proportional to 61,780.99, 91,876.70 and 59,812.69 is: 88,949.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,780.99 : 91,876.70 = 59,812.69 : x
  2. Step 2: Convert to fraction form
    61,780.99/91,876.70 = 59,812.69/x
  3. Step 3: Cross multiply
    61,780.99x = 91,876.70 × 59,812.69
  4. Step 4: Simplify right side
    61,780.99x = 5,495,392,575.32
  5. Step 5: Solve for x
    x = 5,495,392,575.32/61,780.99
  6. Step 6: Final answer
    x = 88,949.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.