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Finding the Fourth Proportional to 511,321.60, 705,692.16 and 368,555.52

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Solution

The fourth proportional to 511,321.60, 705,692.16 and 368,555.52 is: 508,655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,321.60 : 705,692.16 = 368,555.52 : x
  2. Step 2: Convert to fraction form
    511,321.60/705,692.16 = 368,555.52/x
  3. Step 3: Cross multiply
    511,321.60x = 705,692.16 × 368,555.52
  4. Step 4: Simplify right side
    511,321.60x = 260,086,740,988.72
  5. Step 5: Solve for x
    x = 260,086,740,988.72/511,321.60
  6. Step 6: Final answer
    x = 508,655.89

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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.