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Finding the Fourth Proportional to 1,047,702.60, 1,569,221.10 and 907,734.60

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Solution

The fourth proportional to 1,047,702.60, 1,569,221.10 and 907,734.60 is: 1,359,580.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,702.60 : 1,569,221.10 = 907,734.60 : x
  2. Step 2: Convert to fraction form
    1,047,702.60/1,569,221.10 = 907,734.60/x
  3. Step 3: Cross multiply
    1,047,702.60x = 1,569,221.10 × 907,734.60
  4. Step 4: Simplify right side
    1,047,702.60x = 1,424,436,287,520.06
  5. Step 5: Solve for x
    x = 1,424,436,287,520.06/1,047,702.60
  6. Step 6: Final answer
    x = 1,359,580.75

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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.