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Finding the Fourth Proportional to 586,971.88, 810,024.42 and 318,699.88

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Solution

The fourth proportional to 586,971.88, 810,024.42 and 318,699.88 is: 439,807.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,971.88 : 810,024.42 = 318,699.88 : x
  2. Step 2: Convert to fraction form
    586,971.88/810,024.42 = 318,699.88/x
  3. Step 3: Cross multiply
    586,971.88x = 810,024.42 × 318,699.88
  4. Step 4: Simplify right side
    586,971.88x = 258,154,685,451.07
  5. Step 5: Solve for x
    x = 258,154,685,451.07/586,971.88
  6. Step 6: Final answer
    x = 439,807.59

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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.