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Finding the Fourth Proportional to 30,718.63, 46,085.25 and 9,942.13

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Solution

The fourth proportional to 30,718.63, 46,085.25 and 9,942.13 is: 14,915.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.63 : 46,085.25 = 9,942.13 : x
  2. Step 2: Convert to fraction form
    30,718.63/46,085.25 = 9,942.13/x
  3. Step 3: Cross multiply
    30,718.63x = 46,085.25 × 9,942.13
  4. Step 4: Simplify right side
    30,718.63x = 458,185,316.16
  5. Step 5: Solve for x
    x = 458,185,316.16/30,718.63
  6. Step 6: Final answer
    x = 14,915.55

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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.