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Finding the Fourth Proportional to 620,767.35, 856,595.12 and 348,792.03

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Solution

The fourth proportional to 620,767.35, 856,595.12 and 348,792.03 is: 481,297.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,767.35 : 856,595.12 = 348,792.03 : x
  2. Step 2: Convert to fraction form
    620,767.35/856,595.12 = 348,792.03/x
  3. Step 3: Cross multiply
    620,767.35x = 856,595.12 × 348,792.03
  4. Step 4: Simplify right side
    620,767.35x = 298,773,549,048.93
  5. Step 5: Solve for x
    x = 298,773,549,048.93/620,767.35
  6. Step 6: Final answer
    x = 481,297.14

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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.