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Finding the Fourth Proportional to 714,281.29, 985,427.56 and 408,193.45

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Solution

The fourth proportional to 714,281.29, 985,427.56 and 408,193.45 is: 563,146.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,281.29 : 985,427.56 = 408,193.45 : x
  2. Step 2: Convert to fraction form
    714,281.29/985,427.56 = 408,193.45/x
  3. Step 3: Cross multiply
    714,281.29x = 985,427.56 × 408,193.45
  4. Step 4: Simplify right side
    714,281.29x = 402,245,075,441.48
  5. Step 5: Solve for x
    x = 402,245,075,441.48/714,281.29
  6. Step 6: Final answer
    x = 563,146.59

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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.