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Finding the Fourth Proportional to 873,863,867.90, 1,205,949,914.76 and 477,412,535.54

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Solution

The fourth proportional to 873,863,867.90, 1,205,949,914.76 and 477,412,535.54 is: 658,839,011.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,863,867.90 : 1,205,949,914.76 = 477,412,535.54 : x
  2. Step 2: Convert to fraction form
    873,863,867.90/1,205,949,914.76 = 477,412,535.54/x
  3. Step 3: Cross multiply
    873,863,867.90x = 1,205,949,914.76 × 477,412,535.54
  4. Step 4: Simplify right side
    873,863,867.90x = 575,735,606,539,818,496
  5. Step 5: Solve for x
    x = 575,735,606,539,818,496/873,863,867.90
  6. Step 6: Final answer
    x = 658,839,011.07

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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.