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Finding the Fourth Proportional to 519,772.58, 717,278.42 and 290,333.06

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Solution

The fourth proportional to 519,772.58, 717,278.42 and 290,333.06 is: 400,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,772.58 : 717,278.42 = 290,333.06 : x
  2. Step 2: Convert to fraction form
    519,772.58/717,278.42 = 290,333.06/x
  3. Step 3: Cross multiply
    519,772.58x = 717,278.42 × 290,333.06
  4. Step 4: Simplify right side
    519,772.58x = 208,249,638,550.57
  5. Step 5: Solve for x
    x = 208,249,638,550.57/519,772.58
  6. Step 6: Final answer
    x = 400,655.30

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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.