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Finding the Fourth Proportional to 868,521.12, 1,308,698.16 and 714,206.40

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Solution

The fourth proportional to 868,521.12, 1,308,698.16 and 714,206.40 is: 1,076,174.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,521.12 : 1,308,698.16 = 714,206.40 : x
  2. Step 2: Convert to fraction form
    868,521.12/1,308,698.16 = 714,206.40/x
  3. Step 3: Cross multiply
    868,521.12x = 1,308,698.16 × 714,206.40
  4. Step 4: Simplify right side
    868,521.12x = 934,680,601,540.22
  5. Step 5: Solve for x
    x = 934,680,601,540.22/868,521.12
  6. Step 6: Final answer
    x = 1,076,174.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.