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Finding the Fourth Proportional to 719,021.83, 992,270.88 and 396,752.68

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Solution

The fourth proportional to 719,021.83, 992,270.88 and 396,752.68 is: 547,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,021.83 : 992,270.88 = 396,752.68 : x
  2. Step 2: Convert to fraction form
    719,021.83/992,270.88 = 396,752.68/x
  3. Step 3: Cross multiply
    719,021.83x = 992,270.88 × 396,752.68
  4. Step 4: Simplify right side
    719,021.83x = 393,686,130,925.96
  5. Step 5: Solve for x
    x = 393,686,130,925.96/719,021.83
  6. Step 6: Final answer
    x = 547,530.15

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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.