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Finding the Fourth Proportional to 18,779.98, 25,888.76 and 14,295.92

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Solution

The fourth proportional to 18,779.98, 25,888.76 and 14,295.92 is: 19,707.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.98 : 25,888.76 = 14,295.92 : x
  2. Step 2: Convert to fraction form
    18,779.98/25,888.76 = 14,295.92/x
  3. Step 3: Cross multiply
    18,779.98x = 25,888.76 × 14,295.92
  4. Step 4: Simplify right side
    18,779.98x = 370,103,641.86
  5. Step 5: Solve for x
    x = 370,103,641.86/18,779.98
  6. Step 6: Final answer
    x = 19,707.35

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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.