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Finding the Fourth Proportional to 519,516.45, 716,929.65 and 290,060.46

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Solution

The fourth proportional to 519,516.45, 716,929.65 and 290,060.46 is: 400,281.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,516.45 : 716,929.65 = 290,060.46 : x
  2. Step 2: Convert to fraction form
    519,516.45/716,929.65 = 290,060.46/x
  3. Step 3: Cross multiply
    519,516.45x = 716,929.65 × 290,060.46
  4. Step 4: Simplify right side
    519,516.45x = 207,952,944,066.64
  5. Step 5: Solve for x
    x = 207,952,944,066.64/519,516.45
  6. Step 6: Final answer
    x = 400,281.73

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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.