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Finding the Fourth Proportional to 893,810.10, 1,340,715.15 and 473,906.10

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Solution

The fourth proportional to 893,810.10, 1,340,715.15 and 473,906.10 is: 710,859.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,810.10 : 1,340,715.15 = 473,906.10 : x
  2. Step 2: Convert to fraction form
    893,810.10/1,340,715.15 = 473,906.10/x
  3. Step 3: Cross multiply
    893,810.10x = 1,340,715.15 × 473,906.10
  4. Step 4: Simplify right side
    893,810.10x = 635,373,087,947.42
  5. Step 5: Solve for x
    x = 635,373,087,947.42/893,810.10
  6. Step 6: Final answer
    x = 710,859.15

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