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Finding the Fourth Proportional to 704,702,347.92, 972,269,840.88 and 407,236,219.92

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Solution

The fourth proportional to 704,702,347.92, 972,269,840.88 and 407,236,219.92 is: 561,859,196.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,702,347.92 : 972,269,840.88 = 407,236,219.92 : x
  2. Step 2: Convert to fraction form
    704,702,347.92/972,269,840.88 = 407,236,219.92/x
  3. Step 3: Cross multiply
    704,702,347.92x = 972,269,840.88 × 407,236,219.92
  4. Step 4: Simplify right side
    704,702,347.92x = 395,943,494,742,191,104
  5. Step 5: Solve for x
    x = 395,943,494,742,191,104/704,702,347.92
  6. Step 6: Final answer
    x = 561,859,196.17

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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.