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Finding the Fourth Proportional to 112,907.48, 155,814.46 and 61,916.98

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Solution

The fourth proportional to 112,907.48, 155,814.46 and 61,916.98 is: 85,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,907.48 : 155,814.46 = 61,916.98 : x
  2. Step 2: Convert to fraction form
    112,907.48/155,814.46 = 61,916.98/x
  3. Step 3: Cross multiply
    112,907.48x = 155,814.46 × 61,916.98
  4. Step 4: Simplify right side
    112,907.48x = 9,647,560,803.53
  5. Step 5: Solve for x
    x = 9,647,560,803.53/112,907.48
  6. Step 6: Final answer
    x = 85,446.60

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1.5x scale

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.