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Finding the Fourth Proportional to 639,657,837.38, 963,852,889.91 and 525,627,601.01

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Solution

The fourth proportional to 639,657,837.38, 963,852,889.91 and 525,627,601.01 is: 792,029,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,657,837.38 : 963,852,889.91 = 525,627,601.01 : x
  2. Step 2: Convert to fraction form
    639,657,837.38/963,852,889.91 = 525,627,601.01/x
  3. Step 3: Cross multiply
    639,657,837.38x = 963,852,889.91 × 525,627,601.01
  4. Step 4: Simplify right side
    639,657,837.38x = 506,627,682,242,501,504
  5. Step 5: Solve for x
    x = 506,627,682,242,501,504/639,657,837.38
  6. Step 6: Final answer
    x = 792,029,195.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.