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Finding the Fourth Proportional to 423,534.48, 584,478.08 and 251,486.80

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Solution

The fourth proportional to 423,534.48, 584,478.08 and 251,486.80 is: 347,052.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,534.48 : 584,478.08 = 251,486.80 : x
  2. Step 2: Convert to fraction form
    423,534.48/584,478.08 = 251,486.80/x
  3. Step 3: Cross multiply
    423,534.48x = 584,478.08 × 251,486.80
  4. Step 4: Simplify right side
    423,534.48x = 146,988,522,009.34
  5. Step 5: Solve for x
    x = 146,988,522,009.34/423,534.48
  6. Step 6: Final answer
    x = 347,052.08

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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.