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Finding the Fourth Proportional to 872,824.80, 1,306,904.40 and 872,824.80

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Solution

The fourth proportional to 872,824.80, 1,306,904.40 and 872,824.80 is: 1,306,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,824.80 : 1,306,904.40 = 872,824.80 : x
  2. Step 2: Convert to fraction form
    872,824.80/1,306,904.40 = 872,824.80/x
  3. Step 3: Cross multiply
    872,824.80x = 1,306,904.40 × 872,824.80
  4. Step 4: Simplify right side
    872,824.80x = 1,140,698,571,549.12
  5. Step 5: Solve for x
    x = 1,140,698,571,549.12/872,824.80
  6. Step 6: Final answer
    x = 1,306,904.40

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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.