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Finding the Fourth Proportional to 524,853.40, 786,473.70 and 391,106.20

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Solution

The fourth proportional to 524,853.40, 786,473.70 and 391,106.20 is: 586,058.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,853.40 : 786,473.70 = 391,106.20 : x
  2. Step 2: Convert to fraction form
    524,853.40/786,473.70 = 391,106.20/x
  3. Step 3: Cross multiply
    524,853.40x = 786,473.70 × 391,106.20
  4. Step 4: Simplify right side
    524,853.40x = 307,594,740,206.94
  5. Step 5: Solve for x
    x = 307,594,740,206.94/524,853.40
  6. Step 6: Final answer
    x = 586,058.39

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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.