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Finding the Fourth Proportional to 55,675.65, 76,819.13 and 31,477.11

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Solution

The fourth proportional to 55,675.65, 76,819.13 and 31,477.11 is: 43,430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,675.65 : 76,819.13 = 31,477.11 : x
  2. Step 2: Convert to fraction form
    55,675.65/76,819.13 = 31,477.11/x
  3. Step 3: Cross multiply
    55,675.65x = 76,819.13 × 31,477.11
  4. Step 4: Simplify right side
    55,675.65x = 2,418,044,054.75
  5. Step 5: Solve for x
    x = 2,418,044,054.75/55,675.65
  6. Step 6: Final answer
    x = 43,430.91

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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.