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Finding the Fourth Proportional to 1,977,478.53, 2,966,217.79 and 912,205.41

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Solution

The fourth proportional to 1,977,478.53, 2,966,217.79 and 912,205.41 is: 1,368,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,478.53 : 2,966,217.79 = 912,205.41 : x
  2. Step 2: Convert to fraction form
    1,977,478.53/2,966,217.79 = 912,205.41/x
  3. Step 3: Cross multiply
    1,977,478.53x = 2,966,217.79 × 912,205.41
  4. Step 4: Simplify right side
    1,977,478.53x = 2,705,799,915,276.24
  5. Step 5: Solve for x
    x = 2,705,799,915,276.24/1,977,478.53
  6. Step 6: Final answer
    x = 1,368,308.11

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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.