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Finding the Fourth Proportional to 516,879.76, 713,189.53 and 301,978.32

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Solution

The fourth proportional to 516,879.76, 713,189.53 and 301,978.32 is: 416,669.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,879.76 : 713,189.53 = 301,978.32 : x
  2. Step 2: Convert to fraction form
    516,879.76/713,189.53 = 301,978.32/x
  3. Step 3: Cross multiply
    516,879.76x = 713,189.53 × 301,978.32
  4. Step 4: Simplify right side
    516,879.76x = 215,367,774,601.10
  5. Step 5: Solve for x
    x = 215,367,774,601.10/516,879.76
  6. Step 6: Final answer
    x = 416,669.00

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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.