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Finding the Fourth Proportional to 8,482.74, 11,705.65 and 5,123.57

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Solution

The fourth proportional to 8,482.74, 11,705.65 and 5,123.57 is: 7,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.74 : 11,705.65 = 5,123.57 : x
  2. Step 2: Convert to fraction form
    8,482.74/11,705.65 = 5,123.57/x
  3. Step 3: Cross multiply
    8,482.74x = 11,705.65 × 5,123.57
  4. Step 4: Simplify right side
    8,482.74x = 59,974,645.83
  5. Step 5: Solve for x
    x = 59,974,645.83/8,482.74
  6. Step 6: Final answer
    x = 7,070.20

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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.