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Finding the Fourth Proportional to 416,933.40, 575,429.80 and 263,985.78

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Solution

The fourth proportional to 416,933.40, 575,429.80 and 263,985.78 is: 364,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,933.40 : 575,429.80 = 263,985.78 : x
  2. Step 2: Convert to fraction form
    416,933.40/575,429.80 = 263,985.78/x
  3. Step 3: Cross multiply
    416,933.40x = 575,429.80 × 263,985.78
  4. Step 4: Simplify right side
    416,933.40x = 151,905,283,928.28
  5. Step 5: Solve for x
    x = 151,905,283,928.28/416,933.40
  6. Step 6: Final answer
    x = 364,339.45

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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.