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Finding the Fourth Proportional to 372,130.80, 558,196.20 and 369,020.40

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Solution

The fourth proportional to 372,130.80, 558,196.20 and 369,020.40 is: 553,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,130.80 : 558,196.20 = 369,020.40 : x
  2. Step 2: Convert to fraction form
    372,130.80/558,196.20 = 369,020.40/x
  3. Step 3: Cross multiply
    372,130.80x = 558,196.20 × 369,020.40
  4. Step 4: Simplify right side
    372,130.80x = 205,985,785,002.48
  5. Step 5: Solve for x
    x = 205,985,785,002.48/372,130.80
  6. Step 6: Final answer
    x = 553,530.60

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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.