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Finding the Fourth Proportional to 719,191.66, 992,857.60 and 525,381.76

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Solution

The fourth proportional to 719,191.66, 992,857.60 and 525,381.76 is: 725,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,191.66 : 992,857.60 = 525,381.76 : x
  2. Step 2: Convert to fraction form
    719,191.66/992,857.60 = 525,381.76/x
  3. Step 3: Cross multiply
    719,191.66x = 992,857.60 × 525,381.76
  4. Step 4: Simplify right side
    719,191.66x = 521,629,273,317.38
  5. Step 5: Solve for x
    x = 521,629,273,317.38/719,191.66
  6. Step 6: Final answer
    x = 725,299.39

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Double scale
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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.