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Finding the Fourth Proportional to 19,495, 26,903.64 and 11,111.50

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Solution

The fourth proportional to 19,495, 26,903.64 and 11,111.50 is: 15,334.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,495 : 26,903.64 = 11,111.50 : x
  2. Step 2: Convert to fraction form
    19,495/26,903.64 = 11,111.50/x
  3. Step 3: Cross multiply
    19,495x = 26,903.64 × 11,111.50
  4. Step 4: Simplify right side
    19,495x = 298,939,795.86
  5. Step 5: Solve for x
    x = 298,939,795.86/19,495
  6. Step 6: Final answer
    x = 15,334.18

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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.