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Finding the Fourth Proportional to 619,725.60, 929,588.40 and 519,342.30

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Solution

The fourth proportional to 619,725.60, 929,588.40 and 519,342.30 is: 779,013.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,725.60 : 929,588.40 = 519,342.30 : x
  2. Step 2: Convert to fraction form
    619,725.60/929,588.40 = 519,342.30/x
  3. Step 3: Cross multiply
    619,725.60x = 929,588.40 × 519,342.30
  4. Step 4: Simplify right side
    619,725.60x = 482,774,577,709.32
  5. Step 5: Solve for x
    x = 482,774,577,709.32/619,725.60
  6. Step 6: Final answer
    x = 779,013.45

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Double scale
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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.