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Finding the Fourth Proportional to 519,139.04, 716,411.80 and 280,675.04

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Solution

The fourth proportional to 519,139.04, 716,411.80 and 280,675.04 is: 387,331.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,139.04 : 716,411.80 = 280,675.04 : x
  2. Step 2: Convert to fraction form
    519,139.04/716,411.80 = 280,675.04/x
  3. Step 3: Cross multiply
    519,139.04x = 716,411.80 × 280,675.04
  4. Step 4: Simplify right side
    519,139.04x = 201,078,910,621.47
  5. Step 5: Solve for x
    x = 201,078,910,621.47/519,139.04
  6. Step 6: Final answer
    x = 387,331.51

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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.