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Finding the Fourth Proportional to 712,400.32, 983,260.88 and 654,948.64

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Solution

The fourth proportional to 712,400.32, 983,260.88 and 654,948.64 is: 903,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,400.32 : 983,260.88 = 654,948.64 : x
  2. Step 2: Convert to fraction form
    712,400.32/983,260.88 = 654,948.64/x
  3. Step 3: Cross multiply
    712,400.32x = 983,260.88 × 654,948.64
  4. Step 4: Simplify right side
    712,400.32x = 643,985,375,303.57
  5. Step 5: Solve for x
    x = 643,985,375,303.57/712,400.32
  6. Step 6: Final answer
    x = 903,965.59

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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.