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Finding the Fourth Proportional to 253,090.73, 349,280.51 and 145,658.40

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Solution

The fourth proportional to 253,090.73, 349,280.51 and 145,658.40 is: 201,017.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,090.73 : 349,280.51 = 145,658.40 : x
  2. Step 2: Convert to fraction form
    253,090.73/349,280.51 = 145,658.40/x
  3. Step 3: Cross multiply
    253,090.73x = 349,280.51 × 145,658.40
  4. Step 4: Simplify right side
    253,090.73x = 50,875,639,509.49
  5. Step 5: Solve for x
    x = 50,875,639,509.49/253,090.73
  6. Step 6: Final answer
    x = 201,017.40

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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.