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Finding the Fourth Proportional to 459,089.60, 686,690.40 and 412,044.80

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Solution

The fourth proportional to 459,089.60, 686,690.40 and 412,044.80 is: 616,322.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,089.60 : 686,690.40 = 412,044.80 : x
  2. Step 2: Convert to fraction form
    459,089.60/686,690.40 = 412,044.80/x
  3. Step 3: Cross multiply
    459,089.60x = 686,690.40 × 412,044.80
  4. Step 4: Simplify right side
    459,089.60x = 282,947,208,529.92
  5. Step 5: Solve for x
    x = 282,947,208,529.92/459,089.60
  6. Step 6: Final answer
    x = 616,322.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.