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Finding the Fourth Proportional to 944,786,543.90, 1,319,640,061.30 and 944,786,543.90

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Solution

The fourth proportional to 944,786,543.90, 1,319,640,061.30 and 944,786,543.90 is: 1,319,640,061.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    944,786,543.90 : 1,319,640,061.30 = 944,786,543.90 : x
  2. Step 2: Convert to fraction form
    944,786,543.90/1,319,640,061.30 = 944,786,543.90/x
  3. Step 3: Cross multiply
    944,786,543.90x = 1,319,640,061.30 × 944,786,543.90
  4. Step 4: Simplify right side
    944,786,543.90x = 1,246,778,172,707,611,136
  5. Step 5: Solve for x
    x = 1,246,778,172,707,611,136/944,786,543.90
  6. Step 6: Final answer
    x = 1,319,640,061.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.