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Finding the Fourth Proportional to 668,233.36, 921,269.90 and 530,868.08

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Solution

The fourth proportional to 668,233.36, 921,269.90 and 530,868.08 is: 731,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,233.36 : 921,269.90 = 530,868.08 : x
  2. Step 2: Convert to fraction form
    668,233.36/921,269.90 = 530,868.08/x
  3. Step 3: Cross multiply
    668,233.36x = 921,269.90 × 530,868.08
  4. Step 4: Simplify right side
    668,233.36x = 489,072,782,974.79
  5. Step 5: Solve for x
    x = 489,072,782,974.79/668,233.36
  6. Step 6: Final answer
    x = 731,889.21

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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.