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Finding the Fourth Proportional to 673,681.95, 929,556.69 and 383,276.55

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Solution

The fourth proportional to 673,681.95, 929,556.69 and 383,276.55 is: 528,850.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,681.95 : 929,556.69 = 383,276.55 : x
  2. Step 2: Convert to fraction form
    673,681.95/929,556.69 = 383,276.55/x
  3. Step 3: Cross multiply
    673,681.95x = 929,556.69 × 383,276.55
  4. Step 4: Simplify right side
    673,681.95x = 356,277,281,172.62
  5. Step 5: Solve for x
    x = 356,277,281,172.62/673,681.95
  6. Step 6: Final answer
    x = 528,850.86

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1.5x scale

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.