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Finding the Fourth Proportional to 611,109.47, 843,486.09 and 417,595.51

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Solution

The fourth proportional to 611,109.47, 843,486.09 and 417,595.51 is: 576,387.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,109.47 : 843,486.09 = 417,595.51 : x
  2. Step 2: Convert to fraction form
    611,109.47/843,486.09 = 417,595.51/x
  3. Step 3: Cross multiply
    611,109.47x = 843,486.09 × 417,595.51
  4. Step 4: Simplify right side
    611,109.47x = 352,236,001,024.20
  5. Step 5: Solve for x
    x = 352,236,001,024.20/611,109.47
  6. Step 6: Final answer
    x = 576,387.73

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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.