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Finding the Fourth Proportional to 528,594.05, 729,465.24 and 286,878.71

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Solution

The fourth proportional to 528,594.05, 729,465.24 and 286,878.71 is: 395,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,594.05 : 729,465.24 = 286,878.71 : x
  2. Step 2: Convert to fraction form
    528,594.05/729,465.24 = 286,878.71/x
  3. Step 3: Cross multiply
    528,594.05x = 729,465.24 × 286,878.71
  4. Step 4: Simplify right side
    528,594.05x = 209,268,049,940.50
  5. Step 5: Solve for x
    x = 209,268,049,940.50/528,594.05
  6. Step 6: Final answer
    x = 395,895.58

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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.