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Finding the Fourth Proportional to 719,381.10, 992,741.04 and 392,692.80

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Solution

The fourth proportional to 719,381.10, 992,741.04 and 392,692.80 is: 541,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,381.10 : 992,741.04 = 392,692.80 : x
  2. Step 2: Convert to fraction form
    719,381.10/992,741.04 = 392,692.80/x
  3. Step 3: Cross multiply
    719,381.10x = 992,741.04 × 392,692.80
  4. Step 4: Simplify right side
    719,381.10x = 389,842,258,672.51
  5. Step 5: Solve for x
    x = 389,842,258,672.51/719,381.10
  6. Step 6: Final answer
    x = 541,913.40

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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.