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Finding the Fourth Proportional to 19,259,871,208.40, 28,889,806,812.60 and 19,259,871,208.40

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Solution

The fourth proportional to 19,259,871,208.40, 28,889,806,812.60 and 19,259,871,208.40 is: 28,889,806,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,259,871,208.40 : 28,889,806,812.60 = 19,259,871,208.40 : x
  2. Step 2: Convert to fraction form
    19,259,871,208.40/28,889,806,812.60 = 19,259,871,208.40/x
  3. Step 3: Cross multiply
    19,259,871,208.40x = 28,889,806,812.60 × 19,259,871,208.40
  4. Step 4: Simplify right side
    19,259,871,208.40x = 556,413,958,446,232,961,024
  5. Step 5: Solve for x
    x = 556,413,958,446,232,961,024/19,259,871,208.40
  6. Step 6: Final answer
    x = 28,889,806,812.60

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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.