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Finding the Fourth Proportional to 28,693, 39,598.36 and 16,117.76

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Solution

The fourth proportional to 28,693, 39,598.36 and 16,117.76 is: 22,243.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,693 : 39,598.36 = 16,117.76 : x
  2. Step 2: Convert to fraction form
    28,693/39,598.36 = 16,117.76/x
  3. Step 3: Cross multiply
    28,693x = 39,598.36 × 16,117.76
  4. Step 4: Simplify right side
    28,693x = 638,236,862.87
  5. Step 5: Solve for x
    x = 638,236,862.87/28,693
  6. Step 6: Final answer
    x = 22,243.64

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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.