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Finding the Fourth Proportional to 688,513, 950,237.04 and 386,707

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Solution

The fourth proportional to 688,513, 950,237.04 and 386,707 is: 533,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,513 : 950,237.04 = 386,707 : x
  2. Step 2: Convert to fraction form
    688,513/950,237.04 = 386,707/x
  3. Step 3: Cross multiply
    688,513x = 950,237.04 × 386,707
  4. Step 4: Simplify right side
    688,513x = 367,463,315,027.28
  5. Step 5: Solve for x
    x = 367,463,315,027.28/688,513
  6. Step 6: Final answer
    x = 533,705.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.