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Finding the Fourth Proportional to 528,633.54, 729,503.40 and 299,186.71

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Solution

The fourth proportional to 528,633.54, 729,503.40 and 299,186.71 is: 412,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,633.54 : 729,503.40 = 299,186.71 : x
  2. Step 2: Convert to fraction form
    528,633.54/729,503.40 = 299,186.71/x
  3. Step 3: Cross multiply
    528,633.54x = 729,503.40 × 299,186.71
  4. Step 4: Simplify right side
    528,633.54x = 218,257,717,036.36
  5. Step 5: Solve for x
    x = 218,257,717,036.36/528,633.54
  6. Step 6: Final answer
    x = 412,871.49

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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.