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Finding the Fourth Proportional to 66,418.80, 99,743.40 and 46,834.80

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Solution

The fourth proportional to 66,418.80, 99,743.40 and 46,834.80 is: 70,333.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,418.80 : 99,743.40 = 46,834.80 : x
  2. Step 2: Convert to fraction form
    66,418.80/99,743.40 = 46,834.80/x
  3. Step 3: Cross multiply
    66,418.80x = 99,743.40 × 46,834.80
  4. Step 4: Simplify right side
    66,418.80x = 4,671,462,190.32
  5. Step 5: Solve for x
    x = 4,671,462,190.32/66,418.80
  6. Step 6: Final answer
    x = 70,333.43

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1.5x scale

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.