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Finding the Fourth Proportional to 911,435.40, 1,257,854.40 and 503,573.04

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Solution

The fourth proportional to 911,435.40, 1,257,854.40 and 503,573.04 is: 694,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,435.40 : 1,257,854.40 = 503,573.04 : x
  2. Step 2: Convert to fraction form
    911,435.40/1,257,854.40 = 503,573.04/x
  3. Step 3: Cross multiply
    911,435.40x = 1,257,854.40 × 503,573.04
  4. Step 4: Simplify right side
    911,435.40x = 633,421,564,085.38
  5. Step 5: Solve for x
    x = 633,421,564,085.38/911,435.40
  6. Step 6: Final answer
    x = 694,971.43

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1.5x scale

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.