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Finding the Fourth Proportional to 144,915.40, 216,935.70 and 144,915.40

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Solution

The fourth proportional to 144,915.40, 216,935.70 and 144,915.40 is: 216,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,915.40 : 216,935.70 = 144,915.40 : x
  2. Step 2: Convert to fraction form
    144,915.40/216,935.70 = 144,915.40/x
  3. Step 3: Cross multiply
    144,915.40x = 216,935.70 × 144,915.40
  4. Step 4: Simplify right side
    144,915.40x = 31,437,323,739.78
  5. Step 5: Solve for x
    x = 31,437,323,739.78/144,915.40
  6. Step 6: Final answer
    x = 216,935.70

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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.