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Finding the Fourth Proportional to 619,715.70, 929,573.55 and 619,715.70

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Solution

The fourth proportional to 619,715.70, 929,573.55 and 619,715.70 is: 929,573.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,715.70 : 929,573.55 = 619,715.70 : x
  2. Step 2: Convert to fraction form
    619,715.70/929,573.55 = 619,715.70/x
  3. Step 3: Cross multiply
    619,715.70x = 929,573.55 × 619,715.70
  4. Step 4: Simplify right side
    619,715.70x = 576,071,323,239.74
  5. Step 5: Solve for x
    x = 576,071,323,239.74/619,715.70
  6. Step 6: Final answer
    x = 929,573.55

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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.