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Finding the Fourth Proportional to 18,693,062.70, 28,039,594.05 and 10,602,912.30

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Solution

The fourth proportional to 18,693,062.70, 28,039,594.05 and 10,602,912.30 is: 15,904,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693,062.70 : 28,039,594.05 = 10,602,912.30 : x
  2. Step 2: Convert to fraction form
    18,693,062.70/28,039,594.05 = 10,602,912.30/x
  3. Step 3: Cross multiply
    18,693,062.70x = 28,039,594.05 × 10,602,912.30
  4. Step 4: Simplify right side
    18,693,062.70x = 297,301,356,639,751.88
  5. Step 5: Solve for x
    x = 297,301,356,639,751.88/18,693,062.70
  6. Step 6: Final answer
    x = 15,904,368.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.