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Finding the Fourth Proportional to 639,711.60, 882,796.32 and 353,225.52

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Solution

The fourth proportional to 639,711.60, 882,796.32 and 353,225.52 is: 487,448.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,711.60 : 882,796.32 = 353,225.52 : x
  2. Step 2: Convert to fraction form
    639,711.60/882,796.32 = 353,225.52/x
  3. Step 3: Cross multiply
    639,711.60x = 882,796.32 × 353,225.52
  4. Step 4: Simplify right side
    639,711.60x = 311,826,189,186.09
  5. Step 5: Solve for x
    x = 311,826,189,186.09/639,711.60
  6. Step 6: Final answer
    x = 487,448.08

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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.