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Finding the Fourth Proportional to 99,547,904.40, 137,376,079.40 and 53,762,816.40

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Solution

The fourth proportional to 99,547,904.40, 137,376,079.40 and 53,762,816.40 is: 74,192,671.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,547,904.40 : 137,376,079.40 = 53,762,816.40 : x
  2. Step 2: Convert to fraction form
    99,547,904.40/137,376,079.40 = 53,762,816.40/x
  3. Step 3: Cross multiply
    99,547,904.40x = 137,376,079.40 × 53,762,816.40
  4. Step 4: Simplify right side
    99,547,904.40x = 7,385,724,934,534,022
  5. Step 5: Solve for x
    x = 7,385,724,934,534,022/99,547,904.40
  6. Step 6: Final answer
    x = 74,192,671.15

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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.