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Finding the Fourth Proportional to 619,086.40, 868,295.60 and 619,086.40

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Solution

The fourth proportional to 619,086.40, 868,295.60 and 619,086.40 is: 868,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,086.40 : 868,295.60 = 619,086.40 : x
  2. Step 2: Convert to fraction form
    619,086.40/868,295.60 = 619,086.40/x
  3. Step 3: Cross multiply
    619,086.40x = 868,295.60 × 619,086.40
  4. Step 4: Simplify right side
    619,086.40x = 537,549,997,139.84
  5. Step 5: Solve for x
    x = 537,549,997,139.84/619,086.40
  6. Step 6: Final answer
    x = 868,295.60

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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.