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Finding the Fourth Proportional to 719,398.65, 992,534.37 and 512,699.61

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Solution

The fourth proportional to 719,398.65, 992,534.37 and 512,699.61 is: 707,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,398.65 : 992,534.37 = 512,699.61 : x
  2. Step 2: Convert to fraction form
    719,398.65/992,534.37 = 512,699.61/x
  3. Step 3: Cross multiply
    719,398.65x = 992,534.37 × 512,699.61
  4. Step 4: Simplify right side
    719,398.65x = 508,871,984,410.60
  5. Step 5: Solve for x
    x = 508,871,984,410.60/719,398.65
  6. Step 6: Final answer
    x = 707,357.44

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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.