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Finding the Fourth Proportional to 651,411.70, 977,117.55 and 208,179.70

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Solution

The fourth proportional to 651,411.70, 977,117.55 and 208,179.70 is: 312,269.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,411.70 : 977,117.55 = 208,179.70 : x
  2. Step 2: Convert to fraction form
    651,411.70/977,117.55 = 208,179.70/x
  3. Step 3: Cross multiply
    651,411.70x = 977,117.55 × 208,179.70
  4. Step 4: Simplify right side
    651,411.70x = 203,416,038,423.74
  5. Step 5: Solve for x
    x = 203,416,038,423.74/651,411.70
  6. Step 6: Final answer
    x = 312,269.55

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Half scale
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Double scale
Find fourth proportional to 651,412.70, 977,119.05 and 208,180.70
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.