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Finding the Fourth Proportional to 519,507.98, 716,913.99 and 290,068.82

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Solution

The fourth proportional to 519,507.98, 716,913.99 and 290,068.82 is: 400,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,507.98 : 716,913.99 = 290,068.82 : x
  2. Step 2: Convert to fraction form
    519,507.98/716,913.99 = 290,068.82/x
  3. Step 3: Cross multiply
    519,507.98x = 716,913.99 × 290,068.82
  4. Step 4: Simplify right side
    519,507.98x = 207,954,395,120.79
  5. Step 5: Solve for x
    x = 207,954,395,120.79/519,507.98
  6. Step 6: Final answer
    x = 400,291.05

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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.