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Finding the Fourth Proportional to 371,113.60, 556,427.40 and 146,338.60

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Solution

The fourth proportional to 371,113.60, 556,427.40 and 146,338.60 is: 219,412.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,113.60 : 556,427.40 = 146,338.60 : x
  2. Step 2: Convert to fraction form
    371,113.60/556,427.40 = 146,338.60/x
  3. Step 3: Cross multiply
    371,113.60x = 556,427.40 × 146,338.60
  4. Step 4: Simplify right side
    371,113.60x = 81,426,806,717.64
  5. Step 5: Solve for x
    x = 81,426,806,717.64/371,113.60
  6. Step 6: Final answer
    x = 219,412.08

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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.