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Finding the Fourth Proportional to 530,661.70, 732,326.25 and 288,957.52

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Solution

The fourth proportional to 530,661.70, 732,326.25 and 288,957.52 is: 398,768.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,661.70 : 732,326.25 = 288,957.52 : x
  2. Step 2: Convert to fraction form
    530,661.70/732,326.25 = 288,957.52/x
  3. Step 3: Cross multiply
    530,661.70x = 732,326.25 × 288,957.52
  4. Step 4: Simplify right side
    530,661.70x = 211,611,177,030.90
  5. Step 5: Solve for x
    x = 211,611,177,030.90/530,661.70
  6. Step 6: Final answer
    x = 398,768.51

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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.