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Finding the Fourth Proportional to 665,971.04, 919,130.16 and 375,642.16

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Solution

The fourth proportional to 665,971.04, 919,130.16 and 375,642.16 is: 518,437.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,971.04 : 919,130.16 = 375,642.16 : x
  2. Step 2: Convert to fraction form
    665,971.04/919,130.16 = 375,642.16/x
  3. Step 3: Cross multiply
    665,971.04x = 919,130.16 × 375,642.16
  4. Step 4: Simplify right side
    665,971.04x = 345,264,038,623.55
  5. Step 5: Solve for x
    x = 345,264,038,623.55/665,971.04
  6. Step 6: Final answer
    x = 518,437.02

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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.