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Finding the Fourth Proportional to 620,334.76, 929,840.56 and 353,520.76

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Solution

The fourth proportional to 620,334.76, 929,840.56 and 353,520.76 is: 529,904.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,334.76 : 929,840.56 = 353,520.76 : x
  2. Step 2: Convert to fraction form
    620,334.76/929,840.56 = 353,520.76/x
  3. Step 3: Cross multiply
    620,334.76x = 929,840.56 × 353,520.76
  4. Step 4: Simplify right side
    620,334.76x = 328,717,941,450.03
  5. Step 5: Solve for x
    x = 328,717,941,450.03/620,334.76
  6. Step 6: Final answer
    x = 529,904.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.