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Finding the Fourth Proportional to 705,620.16, 973,762.56 and 383,332.68

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Solution

The fourth proportional to 705,620.16, 973,762.56 and 383,332.68 is: 529,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,620.16 : 973,762.56 = 383,332.68 : x
  2. Step 2: Convert to fraction form
    705,620.16/973,762.56 = 383,332.68/x
  3. Step 3: Cross multiply
    705,620.16x = 973,762.56 × 383,332.68
  4. Step 4: Simplify right side
    705,620.16x = 373,275,011,808.46
  5. Step 5: Solve for x
    x = 373,275,011,808.46/705,620.16
  6. Step 6: Final answer
    x = 529,002.76

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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.