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Finding the Fourth Proportional to 852,480,801.30, 1,278,721,201.95 and 852,480,801.30

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Solution

The fourth proportional to 852,480,801.30, 1,278,721,201.95 and 852,480,801.30 is: 1,278,721,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,480,801.30 : 1,278,721,201.95 = 852,480,801.30 : x
  2. Step 2: Convert to fraction form
    852,480,801.30/1,278,721,201.95 = 852,480,801.30/x
  3. Step 3: Cross multiply
    852,480,801.30x = 1,278,721,201.95 × 852,480,801.30
  4. Step 4: Simplify right side
    852,480,801.30x = 1,090,085,274,877,635,072
  5. Step 5: Solve for x
    x = 1,090,085,274,877,635,072/852,480,801.30
  6. Step 6: Final answer
    x = 1,278,721,201.95

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.