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Finding the Fourth Proportional to 662,637.20, 993,955.80 and 611,315.60

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Solution

The fourth proportional to 662,637.20, 993,955.80 and 611,315.60 is: 916,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,637.20 : 993,955.80 = 611,315.60 : x
  2. Step 2: Convert to fraction form
    662,637.20/993,955.80 = 611,315.60/x
  3. Step 3: Cross multiply
    662,637.20x = 993,955.80 × 611,315.60
  4. Step 4: Simplify right side
    662,637.20x = 607,620,686,250.48
  5. Step 5: Solve for x
    x = 607,620,686,250.48/662,637.20
  6. Step 6: Final answer
    x = 916,973.40

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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.