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Finding the Fourth Proportional to 7,590.80, 11,386.20 and 4,966.40

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Solution

The fourth proportional to 7,590.80, 11,386.20 and 4,966.40 is: 7,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,590.80 : 11,386.20 = 4,966.40 : x
  2. Step 2: Convert to fraction form
    7,590.80/11,386.20 = 4,966.40/x
  3. Step 3: Cross multiply
    7,590.80x = 11,386.20 × 4,966.40
  4. Step 4: Simplify right side
    7,590.80x = 56,548,423.68
  5. Step 5: Solve for x
    x = 56,548,423.68/7,590.80
  6. Step 6: Final answer
    x = 7,449.60

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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.