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Finding the Fourth Proportional to 19,009.60, 28,465.80 and 14,052.40

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Solution

The fourth proportional to 19,009.60, 28,465.80 and 14,052.40 is: 21,042.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.60 : 28,465.80 = 14,052.40 : x
  2. Step 2: Convert to fraction form
    19,009.60/28,465.80 = 14,052.40/x
  3. Step 3: Cross multiply
    19,009.60x = 28,465.80 × 14,052.40
  4. Step 4: Simplify right side
    19,009.60x = 400,012,807.92
  5. Step 5: Solve for x
    x = 400,012,807.92/19,009.60
  6. Step 6: Final answer
    x = 21,042.67

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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.