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Finding the Fourth Proportional to 448,617.21, 672,925.74 and 133,071.38

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Solution

The fourth proportional to 448,617.21, 672,925.74 and 133,071.38 is: 199,607.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,617.21 : 672,925.74 = 133,071.38 : x
  2. Step 2: Convert to fraction form
    448,617.21/672,925.74 = 133,071.38/x
  3. Step 3: Cross multiply
    448,617.21x = 672,925.74 × 133,071.38
  4. Step 4: Simplify right side
    448,617.21x = 89,547,156,859.32
  5. Step 5: Solve for x
    x = 89,547,156,859.32/448,617.21
  6. Step 6: Final answer
    x = 199,607.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.