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Finding the Fourth Proportional to 621,710.10, 933,025.95 and 411,278.10

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Solution

The fourth proportional to 621,710.10, 933,025.95 and 411,278.10 is: 617,221.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,710.10 : 933,025.95 = 411,278.10 : x
  2. Step 2: Convert to fraction form
    621,710.10/933,025.95 = 411,278.10/x
  3. Step 3: Cross multiply
    621,710.10x = 933,025.95 × 411,278.10
  4. Step 4: Simplify right side
    621,710.10x = 383,733,139,966.70
  5. Step 5: Solve for x
    x = 383,733,139,966.70/621,710.10
  6. Step 6: Final answer
    x = 617,221.98

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Similar ratio
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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.