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Finding the Fourth Proportional to 521,141.58, 719,114.94 and 291,711.70

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Solution

The fourth proportional to 521,141.58, 719,114.94 and 291,711.70 is: 402,528.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,141.58 : 719,114.94 = 291,711.70 : x
  2. Step 2: Convert to fraction form
    521,141.58/719,114.94 = 291,711.70/x
  3. Step 3: Cross multiply
    521,141.58x = 719,114.94 × 291,711.70
  4. Step 4: Simplify right side
    521,141.58x = 209,774,241,642.80
  5. Step 5: Solve for x
    x = 209,774,241,642.80/521,141.58
  6. Step 6: Final answer
    x = 402,528.31

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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.