Home / 12,938,828.38-17,852,398.45-7,908,304.64

Finding the Fourth Proportional to 12,938,828.38, 17,852,398.45 and 7,908,304.64

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Solution

The fourth proportional to 12,938,828.38, 17,852,398.45 and 7,908,304.64 is: 10,911,513.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938,828.38 : 17,852,398.45 = 7,908,304.64 : x
  2. Step 2: Convert to fraction form
    12,938,828.38/17,852,398.45 = 7,908,304.64/x
  3. Step 3: Cross multiply
    12,938,828.38x = 17,852,398.45 × 7,908,304.64
  4. Step 4: Simplify right side
    12,938,828.38x = 141,182,205,580,643.34
  5. Step 5: Solve for x
    x = 141,182,205,580,643.34/12,938,828.38
  6. Step 6: Final answer
    x = 10,911,513.89

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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.