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Finding the Fourth Proportional to 647,442,055.40, 971,163,083.10 and 647,442,055.40

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Solution

The fourth proportional to 647,442,055.40, 971,163,083.10 and 647,442,055.40 is: 971,163,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,442,055.40 : 971,163,083.10 = 647,442,055.40 : x
  2. Step 2: Convert to fraction form
    647,442,055.40/971,163,083.10 = 647,442,055.40/x
  3. Step 3: Cross multiply
    647,442,055.40x = 971,163,083.10 × 647,442,055.40
  4. Step 4: Simplify right side
    647,442,055.40x = 628,771,822,650,865,024
  5. Step 5: Solve for x
    x = 628,771,822,650,865,024/647,442,055.40
  6. Step 6: Final answer
    x = 971,163,083.10

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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.