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Finding the Fourth Proportional to 5,378,706.80, 7,549,085.20 and 5,378,706.80

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Solution

The fourth proportional to 5,378,706.80, 7,549,085.20 and 5,378,706.80 is: 7,549,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378,706.80 : 7,549,085.20 = 5,378,706.80 : x
  2. Step 2: Convert to fraction form
    5,378,706.80/7,549,085.20 = 5,378,706.80/x
  3. Step 3: Cross multiply
    5,378,706.80x = 7,549,085.20 × 5,378,706.80
  4. Step 4: Simplify right side
    5,378,706.80x = 40,604,315,899,019.36
  5. Step 5: Solve for x
    x = 40,604,315,899,019.36/5,378,706.80
  6. Step 6: Final answer
    x = 7,549,085.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.