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Finding the Fourth Proportional to 425,712.61, 587,497.58 and 253,607.05

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Solution

The fourth proportional to 425,712.61, 587,497.58 and 253,607.05 is: 349,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,712.61 : 587,497.58 = 253,607.05 : x
  2. Step 2: Convert to fraction form
    425,712.61/587,497.58 = 253,607.05/x
  3. Step 3: Cross multiply
    425,712.61x = 587,497.58 × 253,607.05
  4. Step 4: Simplify right side
    425,712.61x = 148,993,528,145.94
  5. Step 5: Solve for x
    x = 148,993,528,145.94/425,712.61
  6. Step 6: Final answer
    x = 349,986.18

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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.