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Finding the Fourth Proportional to 692,506.11, 948,728.95 and 666,609.63

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Solution

The fourth proportional to 692,506.11, 948,728.95 and 666,609.63 is: 913,250.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,506.11 : 948,728.95 = 666,609.63 : x
  2. Step 2: Convert to fraction form
    692,506.11/948,728.95 = 666,609.63/x
  3. Step 3: Cross multiply
    692,506.11x = 948,728.95 × 666,609.63
  4. Step 4: Simplify right side
    692,506.11x = 632,431,856,701.61
  5. Step 5: Solve for x
    x = 632,431,856,701.61/692,506.11
  6. Step 6: Final answer
    x = 913,250.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.