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Finding the Fourth Proportional to 719,447.95, 992,856.22 and 409,333.43

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Solution

The fourth proportional to 719,447.95, 992,856.22 and 409,333.43 is: 564,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,447.95 : 992,856.22 = 409,333.43 : x
  2. Step 2: Convert to fraction form
    719,447.95/992,856.22 = 409,333.43/x
  3. Step 3: Cross multiply
    719,447.95x = 992,856.22 × 409,333.43
  4. Step 4: Simplify right side
    719,447.95x = 406,409,242,029.44
  5. Step 5: Solve for x
    x = 406,409,242,029.44/719,447.95
  6. Step 6: Final answer
    x = 564,890.40

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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.