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Finding the Fourth Proportional to 15,762.53, 21,751.23 and 9,389.59

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Solution

The fourth proportional to 15,762.53, 21,751.23 and 9,389.59 is: 12,957.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,762.53 : 21,751.23 = 9,389.59 : x
  2. Step 2: Convert to fraction form
    15,762.53/21,751.23 = 9,389.59/x
  3. Step 3: Cross multiply
    15,762.53x = 21,751.23 × 9,389.59
  4. Step 4: Simplify right side
    15,762.53x = 204,235,112.53
  5. Step 5: Solve for x
    x = 204,235,112.53/15,762.53
  6. Step 6: Final answer
    x = 12,957.00

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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.