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Finding the Fourth Proportional to 15,580,811.20, 23,371,216.80 and 15,580,811.20

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Solution

The fourth proportional to 15,580,811.20, 23,371,216.80 and 15,580,811.20 is: 23,371,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580,811.20 : 23,371,216.80 = 15,580,811.20 : x
  2. Step 2: Convert to fraction form
    15,580,811.20/23,371,216.80 = 15,580,811.20/x
  3. Step 3: Cross multiply
    15,580,811.20x = 23,371,216.80 × 15,580,811.20
  4. Step 4: Simplify right side
    15,580,811.20x = 364,142,516,475,068.12
  5. Step 5: Solve for x
    x = 364,142,516,475,068.12/15,580,811.20
  6. Step 6: Final answer
    x = 23,371,216.80

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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.