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Finding the Fourth Proportional to 77,235.66, 106,585.47 and 43,245.63

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Solution

The fourth proportional to 77,235.66, 106,585.47 and 43,245.63 is: 59,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,235.66 : 106,585.47 = 43,245.63 : x
  2. Step 2: Convert to fraction form
    77,235.66/106,585.47 = 43,245.63/x
  3. Step 3: Cross multiply
    77,235.66x = 106,585.47 × 43,245.63
  4. Step 4: Simplify right side
    77,235.66x = 4,609,355,799.00
  5. Step 5: Solve for x
    x = 4,609,355,799.00/77,235.66
  6. Step 6: Final answer
    x = 59,679.11

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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.