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Finding the Fourth Proportional to 7,881.98, 10,875.93 and 4,694.30

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Solution

The fourth proportional to 7,881.98, 10,875.93 and 4,694.30 is: 6,477.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.98 : 10,875.93 = 4,694.30 : x
  2. Step 2: Convert to fraction form
    7,881.98/10,875.93 = 4,694.30/x
  3. Step 3: Cross multiply
    7,881.98x = 10,875.93 × 4,694.30
  4. Step 4: Simplify right side
    7,881.98x = 51,054,878.20
  5. Step 5: Solve for x
    x = 51,054,878.20/7,881.98
  6. Step 6: Final answer
    x = 6,477.42

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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.