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Finding the Fourth Proportional to 19,503.79, 26,915.19 and 10,551.28

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Solution

The fourth proportional to 19,503.79, 26,915.19 and 10,551.28 is: 14,560.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,503.79 : 26,915.19 = 10,551.28 : x
  2. Step 2: Convert to fraction form
    19,503.79/26,915.19 = 10,551.28/x
  3. Step 3: Cross multiply
    19,503.79x = 26,915.19 × 10,551.28
  4. Step 4: Simplify right side
    19,503.79x = 283,989,649.55
  5. Step 5: Solve for x
    x = 283,989,649.55/19,503.79
  6. Step 6: Final answer
    x = 14,560.74

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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.