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Finding the Fourth Proportional to 145,328.40, 202,993.20 and 145,328.40

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Solution

The fourth proportional to 145,328.40, 202,993.20 and 145,328.40 is: 202,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,328.40 : 202,993.20 = 145,328.40 : x
  2. Step 2: Convert to fraction form
    145,328.40/202,993.20 = 145,328.40/x
  3. Step 3: Cross multiply
    145,328.40x = 202,993.20 × 145,328.40
  4. Step 4: Simplify right side
    145,328.40x = 29,500,676,966.88
  5. Step 5: Solve for x
    x = 29,500,676,966.88/145,328.40
  6. Step 6: Final answer
    x = 202,993.20

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Half scale
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Double scale
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Similar ratio
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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.