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Finding the Fourth Proportional to 611,573.07, 843,998.86 and 339,642.17

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Solution

The fourth proportional to 611,573.07, 843,998.86 and 339,642.17 is: 468,721.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,573.07 : 843,998.86 = 339,642.17 : x
  2. Step 2: Convert to fraction form
    611,573.07/843,998.86 = 339,642.17/x
  3. Step 3: Cross multiply
    611,573.07x = 843,998.86 × 339,642.17
  4. Step 4: Simplify right side
    611,573.07x = 286,657,600,492.49
  5. Step 5: Solve for x
    x = 286,657,600,492.49/611,573.07
  6. Step 6: Final answer
    x = 468,721.75

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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.