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Finding the Fourth Proportional to 698,196.30, 963,504.29 and 388,090.76

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Solution

The fourth proportional to 698,196.30, 963,504.29 and 388,090.76 is: 535,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,196.30 : 963,504.29 = 388,090.76 : x
  2. Step 2: Convert to fraction form
    698,196.30/963,504.29 = 388,090.76/x
  3. Step 3: Cross multiply
    698,196.30x = 963,504.29 × 388,090.76
  4. Step 4: Simplify right side
    698,196.30x = 373,927,108,322.07
  5. Step 5: Solve for x
    x = 373,927,108,322.07/698,196.30
  6. Step 6: Final answer
    x = 535,561.57

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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.