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Finding the Fourth Proportional to 30,795.12, 46,192.68 and 7,421.58

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Solution

The fourth proportional to 30,795.12, 46,192.68 and 7,421.58 is: 11,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,795.12 : 46,192.68 = 7,421.58 : x
  2. Step 2: Convert to fraction form
    30,795.12/46,192.68 = 7,421.58/x
  3. Step 3: Cross multiply
    30,795.12x = 46,192.68 × 7,421.58
  4. Step 4: Simplify right side
    30,795.12x = 342,822,670.03
  5. Step 5: Solve for x
    x = 342,822,670.03/30,795.12
  6. Step 6: Final answer
    x = 11,132.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.