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Finding the Fourth Proportional to 519,228.21, 716,535.60 and 289,785.51

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Solution

The fourth proportional to 519,228.21, 716,535.60 and 289,785.51 is: 399,904.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,228.21 : 716,535.60 = 289,785.51 : x
  2. Step 2: Convert to fraction form
    519,228.21/716,535.60 = 289,785.51/x
  3. Step 3: Cross multiply
    519,228.21x = 716,535.60 × 289,785.51
  4. Step 4: Simplify right side
    519,228.21x = 207,641,634,279.16
  5. Step 5: Solve for x
    x = 207,641,634,279.16/519,228.21
  6. Step 6: Final answer
    x = 399,904.38

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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.