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Finding the Fourth Proportional to 661,992,761.95, 913,550,008.06 and 383,695,710.68

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Solution

The fourth proportional to 661,992,761.95, 913,550,008.06 and 383,695,710.68 is: 529,500,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,992,761.95 : 913,550,008.06 = 383,695,710.68 : x
  2. Step 2: Convert to fraction form
    661,992,761.95/913,550,008.06 = 383,695,710.68/x
  3. Step 3: Cross multiply
    661,992,761.95x = 913,550,008.06 × 383,695,710.68
  4. Step 4: Simplify right side
    661,992,761.95x = 350,525,219,587,053,440
  5. Step 5: Solve for x
    x = 350,525,219,587,053,440/661,992,761.95
  6. Step 6: Final answer
    x = 529,500,078.76

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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.