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Finding the Fourth Proportional to 1,668,673,488.80, 2,340,980,178.40 and 1,668,673,488.80

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Solution

The fourth proportional to 1,668,673,488.80, 2,340,980,178.40 and 1,668,673,488.80 is: 2,340,980,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668,673,488.80 : 2,340,980,178.40 = 1,668,673,488.80 : x
  2. Step 2: Convert to fraction form
    1,668,673,488.80/2,340,980,178.40 = 1,668,673,488.80/x
  3. Step 3: Cross multiply
    1,668,673,488.80x = 2,340,980,178.40 × 1,668,673,488.80
  4. Step 4: Simplify right side
    1,668,673,488.80x = 3,906,331,561,502,374,400
  5. Step 5: Solve for x
    x = 3,906,331,561,502,374,400/1,668,673,488.80
  6. Step 6: Final answer
    x = 2,340,980,178.40

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Double scale
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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.