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Finding the Fourth Proportional to 619,094.80, 867,913.70 and 619,094.80

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Solution

The fourth proportional to 619,094.80, 867,913.70 and 619,094.80 is: 867,913.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,094.80 : 867,913.70 = 619,094.80 : x
  2. Step 2: Convert to fraction form
    619,094.80/867,913.70 = 619,094.80/x
  3. Step 3: Cross multiply
    619,094.80x = 867,913.70 × 619,094.80
  4. Step 4: Simplify right side
    619,094.80x = 537,320,858,518.76
  5. Step 5: Solve for x
    x = 537,320,858,518.76/619,094.80
  6. Step 6: Final answer
    x = 867,913.70

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.