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Finding the Fourth Proportional to 19,038, 26,266.35 and 12,328.77

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Solution

The fourth proportional to 19,038, 26,266.35 and 12,328.77 is: 17,009.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,038 : 26,266.35 = 12,328.77 : x
  2. Step 2: Convert to fraction form
    19,038/26,266.35 = 12,328.77/x
  3. Step 3: Cross multiply
    19,038x = 26,266.35 × 12,328.77
  4. Step 4: Simplify right side
    19,038x = 323,831,787.89
  5. Step 5: Solve for x
    x = 323,831,787.89/19,038
  6. Step 6: Final answer
    x = 17,009.76

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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.