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Finding the Fourth Proportional to 2,157,695.04, 2,977,394.04 and 1,190,807.76

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Solution

The fourth proportional to 2,157,695.04, 2,977,394.04 and 1,190,807.76 is: 1,643,190.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157,695.04 : 2,977,394.04 = 1,190,807.76 : x
  2. Step 2: Convert to fraction form
    2,157,695.04/2,977,394.04 = 1,190,807.76/x
  3. Step 3: Cross multiply
    2,157,695.04x = 2,977,394.04 × 1,190,807.76
  4. Step 4: Simplify right side
    2,157,695.04x = 3,545,503,927,409.75
  5. Step 5: Solve for x
    x = 3,545,503,927,409.75/2,157,695.04
  6. Step 6: Final answer
    x = 1,643,190.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.