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Finding the Fourth Proportional to 5,000.74, 7,455.75 and 4,870.90

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Solution

The fourth proportional to 5,000.74, 7,455.75 and 4,870.90 is: 7,262.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,000.74 : 7,455.75 = 4,870.90 : x
  2. Step 2: Convert to fraction form
    5,000.74/7,455.75 = 4,870.90/x
  3. Step 3: Cross multiply
    5,000.74x = 7,455.75 × 4,870.90
  4. Step 4: Simplify right side
    5,000.74x = 36,316,203.73
  5. Step 5: Solve for x
    x = 36,316,203.73/5,000.74
  6. Step 6: Final answer
    x = 7,262.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.