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Finding the Fourth Proportional to 1,393,947,032.94, 1,923,577,711.92 and 767,402,008.74

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Solution

The fourth proportional to 1,393,947,032.94, 1,923,577,711.92 and 767,402,008.74 is: 1,058,976,679.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,947,032.94 : 1,923,577,711.92 = 767,402,008.74 : x
  2. Step 2: Convert to fraction form
    1,393,947,032.94/1,923,577,711.92 = 767,402,008.74/x
  3. Step 3: Cross multiply
    1,393,947,032.94x = 1,923,577,711.92 × 767,402,008.74
  4. Step 4: Simplify right side
    1,393,947,032.94x = 1,476,157,400,094,900,992
  5. Step 5: Solve for x
    x = 1,476,157,400,094,900,992/1,393,947,032.94
  6. Step 6: Final answer
    x = 1,058,976,679.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.