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Finding the Fourth Proportional to 406,440.80, 560,880.95 and 225,152.18

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Solution

The fourth proportional to 406,440.80, 560,880.95 and 225,152.18 is: 310,705.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,440.80 : 560,880.95 = 225,152.18 : x
  2. Step 2: Convert to fraction form
    406,440.80/560,880.95 = 225,152.18/x
  3. Step 3: Cross multiply
    406,440.80x = 560,880.95 × 225,152.18
  4. Step 4: Simplify right side
    406,440.80x = 126,283,564,682.81
  5. Step 5: Solve for x
    x = 126,283,564,682.81/406,440.80
  6. Step 6: Final answer
    x = 310,705.93

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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.