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Finding the Fourth Proportional to 620,954.38, 930,549.48 and 478,259.92

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Solution

The fourth proportional to 620,954.38, 930,549.48 and 478,259.92 is: 716,710.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,954.38 : 930,549.48 = 478,259.92 : x
  2. Step 2: Convert to fraction form
    620,954.38/930,549.48 = 478,259.92/x
  3. Step 3: Cross multiply
    620,954.38x = 930,549.48 × 478,259.92
  4. Step 4: Simplify right side
    620,954.38x = 445,044,519,860.84
  5. Step 5: Solve for x
    x = 445,044,519,860.84/620,954.38
  6. Step 6: Final answer
    x = 716,710.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.