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Finding the Fourth Proportional to 424,920.36, 586,432.46 and 317,303.56

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Solution

The fourth proportional to 424,920.36, 586,432.46 and 317,303.56 is: 437,910.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,920.36 : 586,432.46 = 317,303.56 : x
  2. Step 2: Convert to fraction form
    424,920.36/586,432.46 = 317,303.56/x
  3. Step 3: Cross multiply
    424,920.36x = 586,432.46 × 317,303.56
  4. Step 4: Simplify right side
    424,920.36x = 186,077,108,783.86
  5. Step 5: Solve for x
    x = 186,077,108,783.86/424,920.36
  6. Step 6: Final answer
    x = 437,910.55

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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.