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Finding the Fourth Proportional to 18,699.84, 25,804.71 and 10,316.34

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Solution

The fourth proportional to 18,699.84, 25,804.71 and 10,316.34 is: 14,235.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.84 : 25,804.71 = 10,316.34 : x
  2. Step 2: Convert to fraction form
    18,699.84/25,804.71 = 10,316.34/x
  3. Step 3: Cross multiply
    18,699.84x = 25,804.71 × 10,316.34
  4. Step 4: Simplify right side
    18,699.84x = 266,210,161.96
  5. Step 5: Solve for x
    x = 266,210,161.96/18,699.84
  6. Step 6: Final answer
    x = 14,235.96

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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.