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Finding the Fourth Proportional to 77,038.84, 106,302.92 and 43,043.06

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Solution

The fourth proportional to 77,038.84, 106,302.92 and 43,043.06 is: 59,393.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,038.84 : 106,302.92 = 43,043.06 : x
  2. Step 2: Convert to fraction form
    77,038.84/106,302.92 = 43,043.06/x
  3. Step 3: Cross multiply
    77,038.84x = 106,302.92 × 43,043.06
  4. Step 4: Simplify right side
    77,038.84x = 4,575,602,963.74
  5. Step 5: Solve for x
    x = 4,575,602,963.74/77,038.84
  6. Step 6: Final answer
    x = 59,393.46

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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.