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Finding the Fourth Proportional to 668,917.08, 923,100.90 and 362,985.68

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Solution

The fourth proportional to 668,917.08, 923,100.90 and 362,985.68 is: 500,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,917.08 : 923,100.90 = 362,985.68 : x
  2. Step 2: Convert to fraction form
    668,917.08/923,100.90 = 362,985.68/x
  3. Step 3: Cross multiply
    668,917.08x = 923,100.90 × 362,985.68
  4. Step 4: Simplify right side
    668,917.08x = 335,072,407,895.11
  5. Step 5: Solve for x
    x = 335,072,407,895.11/668,917.08
  6. Step 6: Final answer
    x = 500,917.70

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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.