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Finding the Fourth Proportional to 528,570.68, 729,432.88 and 286,855.34

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Solution

The fourth proportional to 528,570.68, 729,432.88 and 286,855.34 is: 395,863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,570.68 : 729,432.88 = 286,855.34 : x
  2. Step 2: Convert to fraction form
    528,570.68/729,432.88 = 286,855.34/x
  3. Step 3: Cross multiply
    528,570.68x = 729,432.88 × 286,855.34
  4. Step 4: Simplify right side
    528,570.68x = 209,241,716,799.58
  5. Step 5: Solve for x
    x = 209,241,716,799.58/528,570.68
  6. Step 6: Final answer
    x = 395,863.27

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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.