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Finding the Fourth Proportional to 8,537.15, 11,783.15 and 5,547.80

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Solution

The fourth proportional to 8,537.15, 11,783.15 and 5,547.80 is: 7,657.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,537.15 : 11,783.15 = 5,547.80 : x
  2. Step 2: Convert to fraction form
    8,537.15/11,783.15 = 5,547.80/x
  3. Step 3: Cross multiply
    8,537.15x = 11,783.15 × 5,547.80
  4. Step 4: Simplify right side
    8,537.15x = 65,370,514.52
  5. Step 5: Solve for x
    x = 65,370,514.52/8,537.15
  6. Step 6: Final answer
    x = 7,657.18

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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.