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Finding the Fourth Proportional to 452,123.40, 678,185.10 and 136,547.40

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Solution

The fourth proportional to 452,123.40, 678,185.10 and 136,547.40 is: 204,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,123.40 : 678,185.10 = 136,547.40 : x
  2. Step 2: Convert to fraction form
    452,123.40/678,185.10 = 136,547.40/x
  3. Step 3: Cross multiply
    452,123.40x = 678,185.10 × 136,547.40
  4. Step 4: Simplify right side
    452,123.40x = 92,604,412,123.74
  5. Step 5: Solve for x
    x = 92,604,412,123.74/452,123.40
  6. Step 6: Final answer
    x = 204,821.10

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