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Finding the Fourth Proportional to 614,075.84, 921,237.92 and 259,090.72

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Solution

The fourth proportional to 614,075.84, 921,237.92 and 259,090.72 is: 388,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,075.84 : 921,237.92 = 259,090.72 : x
  2. Step 2: Convert to fraction form
    614,075.84/921,237.92 = 259,090.72/x
  3. Step 3: Cross multiply
    614,075.84x = 921,237.92 × 259,090.72
  4. Step 4: Simplify right side
    614,075.84x = 238,684,195,984.10
  5. Step 5: Solve for x
    x = 238,684,195,984.10/614,075.84
  6. Step 6: Final answer
    x = 388,688.47

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1.5x scale

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.