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Finding the Third Proportional to 15,418,863,103 and 20,803,666,683.50

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Solution

The third proportional to 15,418,863,103 and 20,803,666,683.50 is: 28,069,031,068.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418,863,103 : 20,803,666,683.50 = 20,803,666,683.50 : x
  2. Step 2: Convert to fraction form
    15,418,863,103/20,803,666,683.50 = 20,803,666,683.50/x
  3. Step 3: Cross multiply
    15,418,863,103x = 20,803,666,683.50 × 20,803,666,683.50
  4. Step 4: Simplify right side
    15,418,863,103x = 432,792,547,478,167,879,680
  5. Step 5: Solve for x
    x = 432,792,547,478,167,879,680/15,418,863,103
  6. Step 6: Final answer
    x = 28,069,031,068.44

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.