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Finding the Fourth Proportional to 668,229.35, 921,264.39 and 530,864.06

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Solution

The fourth proportional to 668,229.35, 921,264.39 and 530,864.06 is: 731,883.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,229.35 : 921,264.39 = 530,864.06 : x
  2. Step 2: Convert to fraction form
    668,229.35/921,264.39 = 530,864.06/x
  3. Step 3: Cross multiply
    668,229.35x = 921,264.39 × 530,864.06
  4. Step 4: Simplify right side
    668,229.35x = 489,066,154,408.82
  5. Step 5: Solve for x
    x = 489,066,154,408.82/668,229.35
  6. Step 6: Final answer
    x = 731,883.68

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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.