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Finding the Fourth Proportional to 524,276.40, 785,831.40 and 287,788.80

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Solution

The fourth proportional to 524,276.40, 785,831.40 and 287,788.80 is: 431,363.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,276.40 : 785,831.40 = 287,788.80 : x
  2. Step 2: Convert to fraction form
    524,276.40/785,831.40 = 287,788.80/x
  3. Step 3: Cross multiply
    524,276.40x = 785,831.40 × 287,788.80
  4. Step 4: Simplify right side
    524,276.40x = 226,153,475,608.32
  5. Step 5: Solve for x
    x = 226,153,475,608.32/524,276.40
  6. Step 6: Final answer
    x = 431,363.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.