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Finding the Fourth Proportional to 25,409.61, 35,030.61 and 16,912.13

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Solution

The fourth proportional to 25,409.61, 35,030.61 and 16,912.13 is: 23,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,409.61 : 35,030.61 = 16,912.13 : x
  2. Step 2: Convert to fraction form
    25,409.61/35,030.61 = 16,912.13/x
  3. Step 3: Cross multiply
    25,409.61x = 35,030.61 × 16,912.13
  4. Step 4: Simplify right side
    25,409.61x = 592,442,055.15
  5. Step 5: Solve for x
    x = 592,442,055.15/25,409.61
  6. Step 6: Final answer
    x = 23,315.67

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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.