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Finding the Fourth Proportional to 572,410.99, 789,887.59 and 317,742.13

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Solution

The fourth proportional to 572,410.99, 789,887.59 and 317,742.13 is: 438,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,410.99 : 789,887.59 = 317,742.13 : x
  2. Step 2: Convert to fraction form
    572,410.99/789,887.59 = 317,742.13/x
  3. Step 3: Cross multiply
    572,410.99x = 789,887.59 × 317,742.13
  4. Step 4: Simplify right side
    572,410.99x = 250,980,565,307.17
  5. Step 5: Solve for x
    x = 250,980,565,307.17/572,410.99
  6. Step 6: Final answer
    x = 438,462.17

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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.