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Finding the Third Proportional to 72,726,248 and 156,989,196

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Solution

The third proportional to 72,726,248 and 156,989,196 is: 338,881,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,726,248 : 156,989,196 = 156,989,196 : x
  2. Step 2: Convert to fraction form
    72,726,248/156,989,196 = 156,989,196/x
  3. Step 3: Cross multiply
    72,726,248x = 156,989,196 × 156,989,196
  4. Step 4: Simplify right side
    72,726,248x = 24,645,607,660,726,416
  5. Step 5: Solve for x
    x = 24,645,607,660,726,416/72,726,248
  6. Step 6: Final answer
    x = 338,881,880.18

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.