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Finding the Fourth Proportional to 624,303.20, 934,381.20 and 437,679.20

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Solution

The fourth proportional to 624,303.20, 934,381.20 and 437,679.20 is: 655,065.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,303.20 : 934,381.20 = 437,679.20 : x
  2. Step 2: Convert to fraction form
    624,303.20/934,381.20 = 437,679.20/x
  3. Step 3: Cross multiply
    624,303.20x = 934,381.20 × 437,679.20
  4. Step 4: Simplify right side
    624,303.20x = 408,959,216,111.04
  5. Step 5: Solve for x
    x = 408,959,216,111.04/624,303.20
  6. Step 6: Final answer
    x = 655,065.06

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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.