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Finding the Fourth Proportional to 528,568.68, 729,430.12 and 286,853.34

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Solution

The fourth proportional to 528,568.68, 729,430.12 and 286,853.34 is: 395,860.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,568.68 : 729,430.12 = 286,853.34 : x
  2. Step 2: Convert to fraction form
    528,568.68/729,430.12 = 286,853.34/x
  3. Step 3: Cross multiply
    528,568.68x = 729,430.12 × 286,853.34
  4. Step 4: Simplify right side
    528,568.68x = 209,239,466,218.60
  5. Step 5: Solve for x
    x = 209,239,466,218.60/528,568.68
  6. Step 6: Final answer
    x = 395,860.51

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Double scale
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Similar ratio
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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.