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Finding the Fourth Proportional to 473,387.40, 710,081.10 and 286,763.40

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Solution

The fourth proportional to 473,387.40, 710,081.10 and 286,763.40 is: 430,145.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,387.40 : 710,081.10 = 286,763.40 : x
  2. Step 2: Convert to fraction form
    473,387.40/710,081.10 = 286,763.40/x
  3. Step 3: Cross multiply
    473,387.40x = 710,081.10 × 286,763.40
  4. Step 4: Simplify right side
    473,387.40x = 203,625,270,511.74
  5. Step 5: Solve for x
    x = 203,625,270,511.74/473,387.40
  6. Step 6: Final answer
    x = 430,145.10

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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.