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Finding the Fourth Proportional to 684,916.32, 945,133.12 and 383,052

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Solution

The fourth proportional to 684,916.32, 945,133.12 and 383,052 is: 528,583.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,916.32 : 945,133.12 = 383,052 : x
  2. Step 2: Convert to fraction form
    684,916.32/945,133.12 = 383,052/x
  3. Step 3: Cross multiply
    684,916.32x = 945,133.12 × 383,052
  4. Step 4: Simplify right side
    684,916.32x = 362,035,131,882.24
  5. Step 5: Solve for x
    x = 362,035,131,882.24/684,916.32
  6. Step 6: Final answer
    x = 528,583.01

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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.