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Finding the Fourth Proportional to 587,428.84, 810,590.90 and 345,697.00

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Solution

The fourth proportional to 587,428.84, 810,590.90 and 345,697.00 is: 477,026.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,428.84 : 810,590.90 = 345,697.00 : x
  2. Step 2: Convert to fraction form
    587,428.84/810,590.90 = 345,697.00/x
  3. Step 3: Cross multiply
    587,428.84x = 810,590.90 × 345,697.00
  4. Step 4: Simplify right side
    587,428.84x = 280,218,838,602.34
  5. Step 5: Solve for x
    x = 280,218,838,602.34/587,428.84
  6. Step 6: Final answer
    x = 477,026.01

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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.