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Finding the Fourth Proportional to 611,111.88, 843,343.38 and 339,197.22

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Solution

The fourth proportional to 611,111.88, 843,343.38 and 339,197.22 is: 468,097.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,111.88 : 843,343.38 = 339,197.22 : x
  2. Step 2: Convert to fraction form
    611,111.88/843,343.38 = 339,197.22/x
  3. Step 3: Cross multiply
    611,111.88x = 843,343.38 × 339,197.22
  4. Step 4: Simplify right side
    611,111.88x = 286,059,730,001.40
  5. Step 5: Solve for x
    x = 286,059,730,001.40/611,111.88
  6. Step 6: Final answer
    x = 468,097.15

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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.