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Finding the Fourth Proportional to 528,587.75, 729,451.47 and 286,870.27

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Solution

The fourth proportional to 528,587.75, 729,451.47 and 286,870.27 is: 395,881.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,587.75 : 729,451.47 = 286,870.27 : x
  2. Step 2: Convert to fraction form
    528,587.75/729,451.47 = 286,870.27/x
  3. Step 3: Cross multiply
    528,587.75x = 729,451.47 × 286,870.27
  4. Step 4: Simplify right side
    528,587.75x = 209,257,940,150.80
  5. Step 5: Solve for x
    x = 209,257,940,150.80/528,587.75
  6. Step 6: Final answer
    x = 395,881.18

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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.