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Finding the Fourth Proportional to 101,828.62, 140,518.62 and 56,506.06

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Solution

The fourth proportional to 101,828.62, 140,518.62 and 56,506.06 is: 77,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,828.62 : 140,518.62 = 56,506.06 : x
  2. Step 2: Convert to fraction form
    101,828.62/140,518.62 = 56,506.06/x
  3. Step 3: Cross multiply
    101,828.62x = 140,518.62 × 56,506.06
  4. Step 4: Simplify right side
    101,828.62x = 7,940,153,572.84
  5. Step 5: Solve for x
    x = 7,940,153,572.84/101,828.62
  6. Step 6: Final answer
    x = 77,975.66

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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.