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Finding the Fourth Proportional to 668,228.34, 921,263 and 530,863.06

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Solution

The fourth proportional to 668,228.34, 921,263 and 530,863.06 is: 731,882.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,228.34 : 921,263 = 530,863.06 : x
  2. Step 2: Convert to fraction form
    668,228.34/921,263 = 530,863.06/x
  3. Step 3: Cross multiply
    668,228.34x = 921,263 × 530,863.06
  4. Step 4: Simplify right side
    668,228.34x = 489,064,495,244.78
  5. Step 5: Solve for x
    x = 489,064,495,244.78/668,228.34
  6. Step 6: Final answer
    x = 731,882.30

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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.