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Finding the Fourth Proportional to 572,347.71, 789,679.80 and 357,705.81

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Solution

The fourth proportional to 572,347.71, 789,679.80 and 357,705.81 is: 493,534.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,347.71 : 789,679.80 = 357,705.81 : x
  2. Step 2: Convert to fraction form
    572,347.71/789,679.80 = 357,705.81/x
  3. Step 3: Cross multiply
    572,347.71x = 789,679.80 × 357,705.81
  4. Step 4: Simplify right side
    572,347.71x = 282,473,052,499.64
  5. Step 5: Solve for x
    x = 282,473,052,499.64/572,347.71
  6. Step 6: Final answer
    x = 493,534.00

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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.