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Finding the Fourth Proportional to 77,322.54, 106,756.51 and 59,385.50

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Solution

The fourth proportional to 77,322.54, 106,756.51 and 59,385.50 is: 81,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,322.54 : 106,756.51 = 59,385.50 : x
  2. Step 2: Convert to fraction form
    77,322.54/106,756.51 = 59,385.50/x
  3. Step 3: Cross multiply
    77,322.54x = 106,756.51 × 59,385.50
  4. Step 4: Simplify right side
    77,322.54x = 6,339,788,190.82
  5. Step 5: Solve for x
    x = 6,339,788,190.82/77,322.54
  6. Step 6: Final answer
    x = 81,991.46

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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.