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Finding the Fourth Proportional to 190,663.61, 285,818.81 and 70,653.74

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Solution

The fourth proportional to 190,663.61, 285,818.81 and 70,653.74 is: 105,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,663.61 : 285,818.81 = 70,653.74 : x
  2. Step 2: Convert to fraction form
    190,663.61/285,818.81 = 70,653.74/x
  3. Step 3: Cross multiply
    190,663.61x = 285,818.81 × 70,653.74
  4. Step 4: Simplify right side
    190,663.61x = 20,194,166,106.49
  5. Step 5: Solve for x
    x = 20,194,166,106.49/190,663.61
  6. Step 6: Final answer
    x = 105,915.16

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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.