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Finding the Fourth Proportional to 699,615.60, 965,303.64 and 397,975.92

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Solution

The fourth proportional to 699,615.60, 965,303.64 and 397,975.92 is: 549,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,615.60 : 965,303.64 = 397,975.92 : x
  2. Step 2: Convert to fraction form
    699,615.60/965,303.64 = 397,975.92/x
  3. Step 3: Cross multiply
    699,615.60x = 965,303.64 × 397,975.92
  4. Step 4: Simplify right side
    699,615.60x = 384,167,604,208.35
  5. Step 5: Solve for x
    x = 384,167,604,208.35/699,615.60
  6. Step 6: Final answer
    x = 549,112.40

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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.