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Finding the Fourth Proportional to 691,447, 954,196.86 and 373,495

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Solution

The fourth proportional to 691,447, 954,196.86 and 373,495 is: 515,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,447 : 954,196.86 = 373,495 : x
  2. Step 2: Convert to fraction form
    691,447/954,196.86 = 373,495/x
  3. Step 3: Cross multiply
    691,447x = 954,196.86 × 373,495
  4. Step 4: Simplify right side
    691,447x = 356,387,756,225.70
  5. Step 5: Solve for x
    x = 356,387,756,225.70/691,447
  6. Step 6: Final answer
    x = 515,423.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.