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Finding the Fourth Proportional to 989,854.90, 1,484,782.35 and 989,854.90

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Solution

The fourth proportional to 989,854.90, 1,484,782.35 and 989,854.90 is: 1,484,782.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,854.90 : 1,484,782.35 = 989,854.90 : x
  2. Step 2: Convert to fraction form
    989,854.90/1,484,782.35 = 989,854.90/x
  3. Step 3: Cross multiply
    989,854.90x = 1,484,782.35 × 989,854.90
  4. Step 4: Simplify right side
    989,854.90x = 1,469,719,084,581.02
  5. Step 5: Solve for x
    x = 1,469,719,084,581.02/989,854.90
  6. Step 6: Final answer
    x = 1,484,782.35

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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.