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Finding the Fourth Proportional to 517,403.12, 776,605.21 and 373,457.34

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Solution

The fourth proportional to 517,403.12, 776,605.21 and 373,457.34 is: 560,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,403.12 : 776,605.21 = 373,457.34 : x
  2. Step 2: Convert to fraction form
    517,403.12/776,605.21 = 373,457.34/x
  3. Step 3: Cross multiply
    517,403.12x = 776,605.21 × 373,457.34
  4. Step 4: Simplify right side
    517,403.12x = 290,028,915,956.74
  5. Step 5: Solve for x
    x = 290,028,915,956.74/517,403.12
  6. Step 6: Final answer
    x = 560,547.29

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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.