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Finding the Fourth Proportional to 21,275,133,886.60, 31,912,700,829.90 and 21,275,133,886.60

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Solution

The fourth proportional to 21,275,133,886.60, 31,912,700,829.90 and 21,275,133,886.60 is: 31,912,700,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,133,886.60 : 31,912,700,829.90 = 21,275,133,886.60 : x
  2. Step 2: Convert to fraction form
    21,275,133,886.60/31,912,700,829.90 = 21,275,133,886.60/x
  3. Step 3: Cross multiply
    21,275,133,886.60x = 31,912,700,829.90 × 21,275,133,886.60
  4. Step 4: Simplify right side
    21,275,133,886.60x = 678,946,982,839,133,405,184
  5. Step 5: Solve for x
    x = 678,946,982,839,133,405,184/21,275,133,886.60
  6. Step 6: Final answer
    x = 31,912,700,829.90

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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.