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Finding the Fourth Proportional to 92,808.16, 128,075.44 and 50,366.72

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Solution

The fourth proportional to 92,808.16, 128,075.44 and 50,366.72 is: 69,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,808.16 : 128,075.44 = 50,366.72 : x
  2. Step 2: Convert to fraction form
    92,808.16/128,075.44 = 50,366.72/x
  3. Step 3: Cross multiply
    92,808.16x = 128,075.44 × 50,366.72
  4. Step 4: Simplify right side
    92,808.16x = 6,450,739,825.36
  5. Step 5: Solve for x
    x = 6,450,739,825.36/92,808.16
  6. Step 6: Final answer
    x = 69,506.17

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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.