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Finding the Fourth Proportional to 225,528,017.20, 315,058,979.60 and 225,528,017.20

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Solution

The fourth proportional to 225,528,017.20, 315,058,979.60 and 225,528,017.20 is: 315,058,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,528,017.20 : 315,058,979.60 = 225,528,017.20 : x
  2. Step 2: Convert to fraction form
    225,528,017.20/315,058,979.60 = 225,528,017.20/x
  3. Step 3: Cross multiply
    225,528,017.20x = 315,058,979.60 × 225,528,017.20
  4. Step 4: Simplify right side
    225,528,017.20x = 71,054,626,970,243,248
  5. Step 5: Solve for x
    x = 71,054,626,970,243,248/225,528,017.20
  6. Step 6: Final answer
    x = 315,058,979.60

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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.