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Finding the Fourth Proportional to 620,587.98, 856,118.43 and 530,907.35

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Solution

The fourth proportional to 620,587.98, 856,118.43 and 530,907.35 is: 732,401.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,587.98 : 856,118.43 = 530,907.35 : x
  2. Step 2: Convert to fraction form
    620,587.98/856,118.43 = 530,907.35/x
  3. Step 3: Cross multiply
    620,587.98x = 856,118.43 × 530,907.35
  4. Step 4: Simplify right side
    620,587.98x = 454,519,562,676.87
  5. Step 5: Solve for x
    x = 454,519,562,676.87/620,587.98
  6. Step 6: Final answer
    x = 732,401.49

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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.