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Finding the Fourth Proportional to 515,695.38, 773,542.00 and 290,953.79

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Solution

The fourth proportional to 515,695.38, 773,542.00 and 290,953.79 is: 436,430.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,695.38 : 773,542.00 = 290,953.79 : x
  2. Step 2: Convert to fraction form
    515,695.38/773,542.00 = 290,953.79/x
  3. Step 3: Cross multiply
    515,695.38x = 773,542.00 × 290,953.79
  4. Step 4: Simplify right side
    515,695.38x = 225,064,971,301.70
  5. Step 5: Solve for x
    x = 225,064,971,301.70/515,695.38
  6. Step 6: Final answer
    x = 436,430.08

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1.5x scale

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.