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Finding the Fourth Proportional to 528,574.66, 729,422.67 and 299,127.68

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Solution

The fourth proportional to 528,574.66, 729,422.67 and 299,127.68 is: 412,790.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,574.66 : 729,422.67 = 299,127.68 : x
  2. Step 2: Convert to fraction form
    528,574.66/729,422.67 = 299,127.68/x
  3. Step 3: Cross multiply
    528,574.66x = 729,422.67 × 299,127.68
  4. Step 4: Simplify right side
    528,574.66x = 218,190,513,646.87
  5. Step 5: Solve for x
    x = 218,190,513,646.87/528,574.66
  6. Step 6: Final answer
    x = 412,790.34

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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.