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Finding the Fourth Proportional to 391,792.88, 540,669.08 and 230,654.72

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Solution

The fourth proportional to 391,792.88, 540,669.08 and 230,654.72 is: 318,300.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,792.88 : 540,669.08 = 230,654.72 : x
  2. Step 2: Convert to fraction form
    391,792.88/540,669.08 = 230,654.72/x
  3. Step 3: Cross multiply
    391,792.88x = 540,669.08 × 230,654.72
  4. Step 4: Simplify right side
    391,792.88x = 124,707,875,260.06
  5. Step 5: Solve for x
    x = 124,707,875,260.06/391,792.88
  6. Step 6: Final answer
    x = 318,300.51

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1.5x scale

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.