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Finding the Third Proportional to 398,866,070 and 612,707,085

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Solution

The third proportional to 398,866,070 and 612,707,085 is: 941,193,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,866,070 : 612,707,085 = 612,707,085 : x
  2. Step 2: Convert to fraction form
    398,866,070/612,707,085 = 612,707,085/x
  3. Step 3: Cross multiply
    398,866,070x = 612,707,085 × 612,707,085
  4. Step 4: Simplify right side
    398,866,070x = 375,409,972,009,197,248
  5. Step 5: Solve for x
    x = 375,409,972,009,197,248/398,866,070
  6. Step 6: Final answer
    x = 941,193,047.60

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.