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Finding the Fourth Proportional to 19,265.40, 28,898.90 and 6,117.40

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Solution

The fourth proportional to 19,265.40, 28,898.90 and 6,117.40 is: 9,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,265.40 : 28,898.90 = 6,117.40 : x
  2. Step 2: Convert to fraction form
    19,265.40/28,898.90 = 6,117.40/x
  3. Step 3: Cross multiply
    19,265.40x = 28,898.90 × 6,117.40
  4. Step 4: Simplify right side
    19,265.40x = 176,786,130.86
  5. Step 5: Solve for x
    x = 176,786,130.86/19,265.40
  6. Step 6: Final answer
    x = 9,176.35

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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.