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Finding the Fourth Proportional to 1,920,811.40, 2,881,362.90 and 572,868.80

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Solution

The fourth proportional to 1,920,811.40, 2,881,362.90 and 572,868.80 is: 859,346.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,811.40 : 2,881,362.90 = 572,868.80 : x
  2. Step 2: Convert to fraction form
    1,920,811.40/2,881,362.90 = 572,868.80/x
  3. Step 3: Cross multiply
    1,920,811.40x = 2,881,362.90 × 572,868.80
  4. Step 4: Simplify right side
    1,920,811.40x = 1,650,642,906,887.52
  5. Step 5: Solve for x
    x = 1,650,642,906,887.52/1,920,811.40
  6. Step 6: Final answer
    x = 859,346.68

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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.