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Finding the Fourth Proportional to 867,155.60, 1,298,983.80 and 867,155.60

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Solution

The fourth proportional to 867,155.60, 1,298,983.80 and 867,155.60 is: 1,298,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,155.60 : 1,298,983.80 = 867,155.60 : x
  2. Step 2: Convert to fraction form
    867,155.60/1,298,983.80 = 867,155.60/x
  3. Step 3: Cross multiply
    867,155.60x = 1,298,983.80 × 867,155.60
  4. Step 4: Simplify right side
    867,155.60x = 1,126,421,076,479.28
  5. Step 5: Solve for x
    x = 1,126,421,076,479.28/867,155.60
  6. Step 6: Final answer
    x = 1,298,983.80

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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.