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Finding the Fourth Proportional to 521,010.77, 719,033.49 and 291,591.05

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Solution

The fourth proportional to 521,010.77, 719,033.49 and 291,591.05 is: 402,417.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,010.77 : 719,033.49 = 291,591.05 : x
  2. Step 2: Convert to fraction form
    521,010.77/719,033.49 = 291,591.05/x
  3. Step 3: Cross multiply
    521,010.77x = 719,033.49 × 291,591.05
  4. Step 4: Simplify right side
    521,010.77x = 209,663,726,739.10
  5. Step 5: Solve for x
    x = 209,663,726,739.10/521,010.77
  6. Step 6: Final answer
    x = 402,417.26

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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.