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Finding the Fourth Proportional to 706,345.12, 974,729.39 and 384,055.48

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Solution

The fourth proportional to 706,345.12, 974,729.39 and 384,055.48 is: 529,981.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,345.12 : 974,729.39 = 384,055.48 : x
  2. Step 2: Convert to fraction form
    706,345.12/974,729.39 = 384,055.48/x
  3. Step 3: Cross multiply
    706,345.12x = 974,729.39 × 384,055.48
  4. Step 4: Simplify right side
    706,345.12x = 374,350,163,044.69
  5. Step 5: Solve for x
    x = 374,350,163,044.69/706,345.12
  6. Step 6: Final answer
    x = 529,981.95

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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.