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Finding the Fourth Proportional to 666,987.40, 935,648.60 and 666,987.40

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Solution

The fourth proportional to 666,987.40, 935,648.60 and 666,987.40 is: 935,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,987.40 : 935,648.60 = 666,987.40 : x
  2. Step 2: Convert to fraction form
    666,987.40/935,648.60 = 666,987.40/x
  3. Step 3: Cross multiply
    666,987.40x = 935,648.60 × 666,987.40
  4. Step 4: Simplify right side
    666,987.40x = 624,065,827,027.64
  5. Step 5: Solve for x
    x = 624,065,827,027.64/666,987.40
  6. Step 6: Final answer
    x = 935,648.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.