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Finding the Fourth Proportional to 459,543.60, 689,315.40 and 341,445.60

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Solution

The fourth proportional to 459,543.60, 689,315.40 and 341,445.60 is: 512,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,543.60 : 689,315.40 = 341,445.60 : x
  2. Step 2: Convert to fraction form
    459,543.60/689,315.40 = 341,445.60/x
  3. Step 3: Cross multiply
    459,543.60x = 689,315.40 × 341,445.60
  4. Step 4: Simplify right side
    459,543.60x = 235,363,710,342.24
  5. Step 5: Solve for x
    x = 235,363,710,342.24/459,543.60
  6. Step 6: Final answer
    x = 512,168.40

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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.