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Finding the Fourth Proportional to 18,904.65, 26,088.63 and 10,407.63

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Solution

The fourth proportional to 18,904.65, 26,088.63 and 10,407.63 is: 14,362.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.65 : 26,088.63 = 10,407.63 : x
  2. Step 2: Convert to fraction form
    18,904.65/26,088.63 = 10,407.63/x
  3. Step 3: Cross multiply
    18,904.65x = 26,088.63 × 10,407.63
  4. Step 4: Simplify right side
    18,904.65x = 271,520,808.25
  5. Step 5: Solve for x
    x = 271,520,808.25/18,904.65
  6. Step 6: Final answer
    x = 14,362.65

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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.