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Finding the Fourth Proportional to 684,996.32, 945,338.64 and 383,192.48

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Solution

The fourth proportional to 684,996.32, 945,338.64 and 383,192.48 is: 528,830.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,996.32 : 945,338.64 = 383,192.48 : x
  2. Step 2: Convert to fraction form
    684,996.32/945,338.64 = 383,192.48/x
  3. Step 3: Cross multiply
    684,996.32x = 945,338.64 × 383,192.48
  4. Step 4: Simplify right side
    684,996.32x = 362,246,657,901.43
  5. Step 5: Solve for x
    x = 362,246,657,901.43/684,996.32
  6. Step 6: Final answer
    x = 528,830.08

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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.