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Finding the Fourth Proportional to 77,507.84, 106,993.32 and 52,391.36

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Solution

The fourth proportional to 77,507.84, 106,993.32 and 52,391.36 is: 72,322.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,507.84 : 106,993.32 = 52,391.36 : x
  2. Step 2: Convert to fraction form
    77,507.84/106,993.32 = 52,391.36/x
  3. Step 3: Cross multiply
    77,507.84x = 106,993.32 × 52,391.36
  4. Step 4: Simplify right side
    77,507.84x = 5,605,525,545.72
  5. Step 5: Solve for x
    x = 5,605,525,545.72/77,507.84
  6. Step 6: Final answer
    x = 72,322.05

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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.