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Finding the Fourth Proportional to 719,369.81, 992,725.57 and 392,681.52

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Solution

The fourth proportional to 719,369.81, 992,725.57 and 392,681.52 is: 541,897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,369.81 : 992,725.57 = 392,681.52 : x
  2. Step 2: Convert to fraction form
    719,369.81/992,725.57 = 392,681.52/x
  3. Step 3: Cross multiply
    719,369.81x = 992,725.57 × 392,681.52
  4. Step 4: Simplify right side
    719,369.81x = 389,824,986,261.32
  5. Step 5: Solve for x
    x = 389,824,986,261.32/719,369.81
  6. Step 6: Final answer
    x = 541,897.90

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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.