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Finding the Fourth Proportional to 611,961.91, 843,748.08 and 407,564.71

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Solution

The fourth proportional to 611,961.91, 843,748.08 and 407,564.71 is: 561,933.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,961.91 : 843,748.08 = 407,564.71 : x
  2. Step 2: Convert to fraction form
    611,961.91/843,748.08 = 407,564.71/x
  3. Step 3: Cross multiply
    611,961.91x = 843,748.08 × 407,564.71
  4. Step 4: Simplify right side
    611,961.91x = 343,881,941,538.26
  5. Step 5: Solve for x
    x = 343,881,941,538.26/611,961.91
  6. Step 6: Final answer
    x = 561,933.57

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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.