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Finding the Fourth Proportional to 5,641.60, 8,462.80 and 1,746.32

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Solution

The fourth proportional to 5,641.60, 8,462.80 and 1,746.32 is: 2,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.60 : 8,462.80 = 1,746.32 : x
  2. Step 2: Convert to fraction form
    5,641.60/8,462.80 = 1,746.32/x
  3. Step 3: Cross multiply
    5,641.60x = 8,462.80 × 1,746.32
  4. Step 4: Simplify right side
    5,641.60x = 14,778,756.90
  5. Step 5: Solve for x
    x = 14,778,756.90/5,641.60
  6. Step 6: Final answer
    x = 2,619.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.