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Finding the Fourth Proportional to 672,135.66, 927,742.80 and 439,595.64

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Solution

The fourth proportional to 672,135.66, 927,742.80 and 439,595.64 is: 606,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,135.66 : 927,742.80 = 439,595.64 : x
  2. Step 2: Convert to fraction form
    672,135.66/927,742.80 = 439,595.64/x
  3. Step 3: Cross multiply
    672,135.66x = 927,742.80 × 439,595.64
  4. Step 4: Simplify right side
    672,135.66x = 407,831,689,921.39
  5. Step 5: Solve for x
    x = 407,831,689,921.39/672,135.66
  6. Step 6: Final answer
    x = 606,769.90

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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.