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Finding the Fourth Proportional to 1,159,917.60, 1,737,802.80 and 948,410.40

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Solution

The fourth proportional to 1,159,917.60, 1,737,802.80 and 948,410.40 is: 1,420,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,917.60 : 1,737,802.80 = 948,410.40 : x
  2. Step 2: Convert to fraction form
    1,159,917.60/1,737,802.80 = 948,410.40/x
  3. Step 3: Cross multiply
    1,159,917.60x = 1,737,802.80 × 948,410.40
  4. Step 4: Simplify right side
    1,159,917.60x = 1,648,150,248,669.12
  5. Step 5: Solve for x
    x = 1,648,150,248,669.12/1,159,917.60
  6. Step 6: Final answer
    x = 1,420,920.11

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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.