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Finding the Fourth Proportional to 618,927.40, 865,448.60 and 618,927.40

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Solution

The fourth proportional to 618,927.40, 865,448.60 and 618,927.40 is: 865,448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,927.40 : 865,448.60 = 618,927.40 : x
  2. Step 2: Convert to fraction form
    618,927.40/865,448.60 = 618,927.40/x
  3. Step 3: Cross multiply
    618,927.40x = 865,448.60 × 618,927.40
  4. Step 4: Simplify right side
    618,927.40x = 535,649,851,831.64
  5. Step 5: Solve for x
    x = 535,649,851,831.64/618,927.40
  6. Step 6: Final answer
    x = 865,448.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.