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Finding the Fourth Proportional to 1,692,753,275.76, 2,335,719,237.33 and 978,355,353.87

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Solution

The fourth proportional to 1,692,753,275.76, 2,335,719,237.33 and 978,355,353.87 is: 1,349,968,393.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692,753,275.76 : 2,335,719,237.33 = 978,355,353.87 : x
  2. Step 2: Convert to fraction form
    1,692,753,275.76/2,335,719,237.33 = 978,355,353.87/x
  3. Step 3: Cross multiply
    1,692,753,275.76x = 2,335,719,237.33 × 978,355,353.87
  4. Step 4: Simplify right side
    1,692,753,275.76x = 2,285,163,420,978,958,592
  5. Step 5: Solve for x
    x = 2,285,163,420,978,958,592/1,692,753,275.76
  6. Step 6: Final answer
    x = 1,349,968,393.92

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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.