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Finding the Fourth Proportional to 964,712.80, 1,445,643.60 and 699,032.80

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Solution

The fourth proportional to 964,712.80, 1,445,643.60 and 699,032.80 is: 1,047,516.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    964,712.80 : 1,445,643.60 = 699,032.80 : x
  2. Step 2: Convert to fraction form
    964,712.80/1,445,643.60 = 699,032.80/x
  3. Step 3: Cross multiply
    964,712.80x = 1,445,643.60 × 699,032.80
  4. Step 4: Simplify right side
    964,712.80x = 1,010,552,293,510.08
  5. Step 5: Solve for x
    x = 1,010,552,293,510.08/964,712.80
  6. Step 6: Final answer
    x = 1,047,516.21

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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.