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Finding the Fourth Proportional to 866,641,664.84, 1,195,967,815.58 and 470,164,654.40

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Solution

The fourth proportional to 866,641,664.84, 1,195,967,815.58 and 470,164,654.40 is: 648,828,480.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,641,664.84 : 1,195,967,815.58 = 470,164,654.40 : x
  2. Step 2: Convert to fraction form
    866,641,664.84/1,195,967,815.58 = 470,164,654.40/x
  3. Step 3: Cross multiply
    866,641,664.84x = 1,195,967,815.58 × 470,164,654.40
  4. Step 4: Simplify right side
    866,641,664.84x = 562,301,794,685,693,568
  5. Step 5: Solve for x
    x = 562,301,794,685,693,568/866,641,664.84
  6. Step 6: Final answer
    x = 648,828,480.67

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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.