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Finding the Fourth Proportional to 665,907.36, 918,955.20 and 364,101.12

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Solution

The fourth proportional to 665,907.36, 918,955.20 and 364,101.12 is: 502,461.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,907.36 : 918,955.20 = 364,101.12 : x
  2. Step 2: Convert to fraction form
    665,907.36/918,955.20 = 364,101.12/x
  3. Step 3: Cross multiply
    665,907.36x = 918,955.20 × 364,101.12
  4. Step 4: Simplify right side
    665,907.36x = 334,592,617,549.82
  5. Step 5: Solve for x
    x = 334,592,617,549.82/665,907.36
  6. Step 6: Final answer
    x = 502,461.21

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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.